CN103686878A - Redirection method and device, terminal and base station - Google Patents
Redirection method and device, terminal and base station Download PDFInfo
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- CN103686878A CN103686878A CN201210315198.3A CN201210315198A CN103686878A CN 103686878 A CN103686878 A CN 103686878A CN 201210315198 A CN201210315198 A CN 201210315198A CN 103686878 A CN103686878 A CN 103686878A
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Abstract
The invention discloses a redirection method. After a terminal receives a message which carries with a redirection command and is sent by an LTE (Long Term Evolution) system base station, the redirection access to the CDMA 1x RTT network is executed; and before or after the message carrying with the redirection command and sent by the LTE system base station is received, the terminal implements the different system measurement to obtain a message if the CDMA 1x RTT network can be accessed in. In addition, the LTE system base station also sends an auxiliary message, helping the terminal to be quickly accessed in the CDMA 1x RTT network, to the terminal. The invention further discloses a redirection device, the terminal and the base station. When the redirection of the LET system to the CDMA 1x RTT network is carried out, the terminal can be directly and quickly accessed in the CDMA 1x RTT network according to the auxiliary message, so that the time delay of redirecting the terminal from the LTE system to the CDMA 1x RTT network is largely reduced.
Description
Technical field
The present invention relates to redirecting technique, relate in particular to a kind of redirected method and device, 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 circuit domain 1x Radio Transmission Technology of network (RTT, Radio Transmission Technology) system and packet domain LTE network is a trend of network Development.In general, the CDMA 1x RTT network of support voice business is disposed as wide covering, Fig. 1 is the structural representation that LTE network and CDMA 1x RTT 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 CDMA 1x RTT network also can cover respectively different geographical position from LTE system.
In order to support LTE/CDMA 1x RTT dual-mode terminal to come to return back to CDMA 1x RTT network from packet domain LTE network rapidly in speech business temporarily, existing protocol has been stipulated two kinds of method: CSFB and e-CSFB.This patent is only paid close attention to the performance optimization to CSFB technology.Particularly, between LTE system and CDMA1x RTT network by mutual solution (IWS, Interworking Solution) network element is set up transparent signalling path, and LTE/CDMA dual-mode terminal completes the pre-registration in CDMA1x RTT network in advance by this transparent signaling passage.Described pre-registration process refers to that terminal fulfils CDMA 1x RTT registration process ahead of schedule in universal land radio access web (E-UTRAN, the Evolved Universal Terrestrial Radio Access Network) region of the evolution of eating dishes without rice or wine of LTE by the tunnel between LTE-CDMA 1x RTT.The relevant flow process of eating dishes without rice or wine of this pre-registration mainly comprises: LTE eNB (base station) broadcasts the 1x network information by system message, can comprise CDMA 1x Network Recognition (such as system number and/or network number), frequency range, frequency, adjacent area identification, power contorl parameters (open loop power is adjusted parameter, power is adjusted step-length) etc.; Terminal, before initiating CDMA 1x RTT pre-registration, falls (CSFB, Circuit Service FallBack) parameter request message after rise first to eNB transtation mission circuit territory business; ENB sends CSFB parameter response message to terminal, carries CDMA 1x RTT network parameter; Between the IWS of eNB by CDMA 1x RTT and CDMA 1x RTT, set up S102 tunnel, terminal completes CDMA 1x RTT by this tunnel and registers.
The typical process that terminal return back to CDMA 1x RTT circuit domain comprises: terminal will be initiated an audio call; Terminal sends a service request (CSFB deictic word) to Mobility Management Entity (MME, Mobility Management Entity); MME, to eNB transmitting terminal contextual modifications message (terminal capability, CSFB deictic word), informs that eNB moves to CDMA 1x RTT wireless network by terminal; In optional situation, eNB, to measurement report of terminal request, checks whether target CDMA 1x RTT wireless area can complete CSFB; ENB discharges radio resource control RRC (Radio Resource Control) and connects; ENB by S1 interface to MME transmitting terminal context releasing request (for having there is CSFB to CDMA1x RTT network in reason deictic word); MME is made as suspended state by terminal context, sends and hangs up request message simultaneously to gateway (S-GW, Serving Gateway), requires evolved packet system (EPS, the Evolved Packet System) passage of terminating terminal; S-GW, to MME back response message, informs that terminal is suspended; Context about this terminal in E-UTRAN is released; Terminal moves on to CDMA 1x RTT network, according to normal step, initiates audio call.Wherein, between the air interface (eNB-terminal) of LTE, eNB has coordinated this flow process by terminal being triggered to redirected flow process.Described redirected flow process refers to that first terminal needs to disconnect the radio communication of sources traffic system (LTE system), then under the idle condition of destinations traffic system, search and resident 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.
Wherein, LTE to CDMA 1x RTT wireless connections are redirected flow process and refer to that LTE network is under overload or other reasons, by LTE eNB, initiatively send RRC connection release message (RRCConnectionRelease Message) to 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 terminal when transition between systems.But because the supplementary that LTE agreement supports eNB to carry is at present less, so LTE to CDMA 1x RTT 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, terminal, base station, can make the time delay of terminal from LTE system to CDMA 1x RTT network redirection diminish.
For achieving the above object, technical scheme of the present invention is achieved in that
A redirected method, described method comprises:
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 described CDMA 1x RTT network of CDMA 1x RTT network, carries out the redirected access of described CDMA 1x RTT 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 CDMA 1x RTT network access.
Preferably, described method also comprises:
Described in the supplementary of described CDMA 1x RTT network is carried on, carry in the message of redirect command and send to described terminal;
Or the supplementary of described CDMA 1x RTT network is carried on and is broadcast to described terminal in system message.
Preferably, described method also comprises:
The supplementary of described CDMA 1x RTT network is pre-configured in described LTE system;
Or, the supplementary of described CDMA 1x RTT network is notified to described LTE system to the supplementary of CDMA 1x RTT network described in described LTE system storage.
Preferably, the described supplementary by described CDMA 1x RTT network is notified to described LTE system, comprising:
Described CDMA 1x RTT network is notified described LTE system by the supplementary of described CDMA 1x RTT network by the backhaul interface between described CDMA 1x RTT network and described LTE system.
Preferably, described backhaul interface is S102 tunnel, and described S102 tunnel is via the mutual solution IWS network element of described CDMA 1x RTT network;
Described backhaul interface be new definition for interface mutual between described CDMA 1x RTT network and described LTE system.
Preferably, the supplementary of described CDMA 1x RTT network comprise following information one of at least:
The Physical Cell Identifier of Target cell, access power relevant parameter, maximum access channel message physical size MAX_CAP_SZ, access channel pilot frequency length PAM_SZ, access probe relevant parameter; Described access probe relevant parameter comprise following information one of at least: the Timing randomization PROBE_PN_RAN of access channel probe, confirm that overtime ACC_TMO, access channel probe are kept out of the way scope PROBE_BKOFF, access channel probe sequence is kept out of the way scope BKOFF.
Preferably, the message that carries redirect command described in comprises that Radio Resource control connection discharges RRCConnectionRelease message.
A redirected device, 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 terminal to access fast the supplementary of the described CDMA 1x RTT network of CDMA 1x RTT network;
Performance element, for carrying out the redirected access of described CDMA 1x RTT 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 CDMA 1x RTT network.
In the message of the redirect command that preferably, described receiving element receives, carry the supplementary of described CDMA 1xRTT network;
Or, in the system message that described receiving element receives, carry the supplementary of described CDMA 1x RTT network.
Preferably, the supplementary of described CDMA 1x RTT network comprise following information one of at least:
The Physical Cell Identifier of Target cell, access power relevant parameter, maximum access channel message physical size MAX_CAP_SZ, access channel pilot frequency length PAM_SZ, access probe relevant parameter; Described access probe relevant parameter comprise following information one of at least: the Timing randomization PROBE_PN_RAN of access channel probe, confirm that overtime ACC_TMO, access channel probe are kept out of the way scope PROBE_BKOFF, access channel probe sequence is kept out of the way scope BKOFF;
The described message that carries redirect command comprises RRCConnectionRelease message.
A terminal, described terminal comprises aforesaid redirected device.
A base station, is carried on the supplementary of CDMA 1x RTT network in the message or system message that carries redirect command, and sends to terminal.
In the present invention, 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 CDMA 1x RTT network of CDMA 1x RTT network, carries out the redirected access of CDMA 1x RTT network.In addition, LTE system base-station also sends the supplementary of assisting terminal to access fast the CDMA 1x RTT network of CDMA 1x RTT network to terminal.When carrying out LTE system to CDMA 1x RTT network redirected, terminal can directly be linked into CDMA 1x RTT network according to above-mentioned supplementary fast, has greatly reduced the time delay of terminal from LTE system to CDMA1x RTT network redirection.
Accompanying drawing explanation
Fig. 1 is the structural representation that LTE network and CDMA 1x RTT 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 CDMA 1x RTT network; Wherein, LTE system base-station also sends the supplementary of assisting terminal to access fast the CDMA 1x RTT network of CDMA 1x RTT network to terminal.
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 CDMA 1x RTT 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 CDMA 1x RTT network from LTE system.
In the present invention, redirected reason comprises that mobile terminal has entered into the overlay area of CDMA 1x RTT 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 CDMA 1x RTT network base station.
Step 202, terminal is redirected to CDMA 1x RTT network based on CDMA 1x RTT 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 CDMA 1x RTT Neighboring Cell List message to terminal, terminal is carried out adjacent area CDMA 1x RTT and is measured and reporting measurement result.LTE system base-station is redirected to terminal on suitable CDMA 1x RTT 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 CDMA 1x RTT network by system or terminal.
In the present invention, from LTE system be redirected to the supplementary of CDMA 1x RTT 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 CDMA 1x RTT network from LTE system also can or send to LTE system immediately by CDMA 1x RTT network cycle.For example, when renewal has occurred the supplementary of adjacent area CDMA 1x RTT network, CDMA 1x RTT network and LTE system carry out alternately, and the supplementary that LTE system acquisition storage are redirected to CDMA 1x RTT network from LTE system is notified in time to terminal.For example, when the supplementary that is redirected to CDMA 1x RTT network from LTE system is upgraded, CDMA 1x RTT network is notified LTE system by the supplementary of CDMA 1x RTT network by the backhaul interface between CDMA 1x RTT network and LTE system.Backhaul interface be S101 tunnel or for new definition for interface mutual between CDMA1x RTT network and LTE system.
In order to support the present embodiment, in RRCConncetionRelease message, need the beared information of increase as follows:
The Physical Cell Identifier of Target cell, access power relevant parameter (standard emission power bias scope NOM_PWR, initial power biasing scope INIT_PWR, power bias scope step-length PWR_STEP, increased power step-length NUM_STEP), maximum access channel message physical size Maximum Access Channel message capsule size (MAX_CAP_SZ), access channel pilot frequency length A ccess Channel preamble length (PAM_SZ), the parameter that access probe is relevant, as: the Timing randomization Time randomization for Access Channel probes (PROBE_PN_RAN) of access channel probe, confirm overtime Acknowledgment timeout (ACC_TMO), access channel probe is kept out of the way scope Access Channel probe backoff range (PROBE_BKOFF), access channel probe sequence is kept out of the way scope Access Channel probe sequence backoff range (BKOFF).
Wherein, in above-mentioned information, except the Physical Cell Identifier of Target cell, other information can be carried by an information container (systemInformation), as follows:
In this example, while carrying the supplementary of the CDMA 1x RTT network of assisting described terminal to access fast described CDMA 1x RTT network in the redirect command that LTE system base-station sends to terminal, terminal can be determined fast and treat redirected CDMA 1x RTT network cell according to these supplementarys, be implemented to the quick access of CDMA 1x RTT network cell, thereby greatly shortened terminal, from LTE system, be redirected to the time delay of CDMA 1x RTT 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 CDMA 1x RTT 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 CDMA 1x RTT 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 CDMA 1x RTT 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 CDMA 1x RTT network base station.
Step 302, terminal is redirected to CDMA 1x RTT network based on CDMA 1x RTT network-assist information.
In the present invention, from LTE system be redirected to the supplementary of CDMA 1x RTT 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 CDMA 1x RTT network from LTE system also can or send to LTE system immediately by CDMA1x RTT network cycle.For example, when renewal has occurred the supplementary of adjacent area CDMA 1x RTT network, CDMA 1x RTT network and LTE system carry out alternately, and the supplementary that LTE system acquisition storage are redirected to CDMA 1x RTT network from LTE system is notified in time to terminal.For example, when the supplementary that is redirected to CDMA 1x RTT network from LTE system is upgraded, CDMA 1x RTT network is notified LTE system by the supplementary of this CDMA 1x RTT network by the backhaul interface between CDMA 1x RTT network and LTE system.Wherein, backhaul interface be S101 tunnel or for new definition for interface mutual between CDMA 1x RTT 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 CDMA 1x RTT Neighboring Cell List message, terminal is carried out adjacent area CDMA 1x RTT and is measured and reporting measurement result.LTE system base-station is redirected to terminal on suitable CDMA 1x RTT 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 CDMA 1xRTT 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 CDMA 1x RTT network of the described CDMA 1x RTT network of access fast;
Performance element 41, for carrying out the redirected access of CDMA 1x RTT 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 CDMA 1x RTT network.
In the message of the redirect command that described receiving element receives, carry the supplementary of described CDMA 1x RTT network;
Or, in the system message that described receiving element receives, carry the supplementary of described CDMA 1x RTT network.
The supplementary of described CDMA 1x RTT network comprise following information one of at least:
The Physical Cell Identifier of Target cell, access power relevant parameter (standard emission power bias scope NOM_PWR, initial power biasing scope INIT_PWR, power bias scope step-length PWR_STEP, increased power step-length NUM_STEP), maximum access channel message physical size Maximum Access Channel message capsule size (MAX_CAP_SZ), access channel pilot frequency length A ccess Channel preamble length (PAM_SZ), the parameter that access probe is relevant, as: the Timing randomization Time randomization for Access Channel probes (PROBE_PN_RAN) of access channel probe, confirm overtime Acknowledgment timeout (ACC_TMO), access channel probe is kept out of the way scope Access Channel probe backoff range (PROBE_BKOFF), access channel probe sequence is kept out of the way scope Access Channel probe sequence backoff range (BKOFF).
The described message that carries redirect command comprises 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 CDMA 1x RTT network is 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.
In the present invention, can the supplementary of described CDMA 1x RTT network is pre-configured in described LTE system;
Or, the supplementary of described CDMA 1x RTT network is notified to described LTE system to the supplementary of CDMA 1x RTT network described in described LTE system storage.
The supplementary of described CDMA 1x RTT network is notified to described LTE system, being comprised:
Described CDMA 1x RTT network is notified described LTE system by the supplementary of described CDMA 1x RTT network by the backhaul interface between described CDMA 1x RTT network and described LTE system.
In the present invention, backhaul interface is S102 tunnel, and described S 102 tunnels are via the IWS network element of described CDMA 1x RTT network;
Described backhaul interface be new definition for interface mutual between described CDMA 1x RTT network and described LTE system.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (14)
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 described CDMA1x RTT network of code division multiple access CDMA 1x Radio Transmission Technology RTT network, carries out the redirected access of described CDMA 1x RTT 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 CDMA 1x RTT network access.
3. method according to claim 1, is characterized in that, described method also comprises:
Described in the supplementary of described CDMA 1x RTT network is carried on, carry in the message of redirect command and send to described terminal;
Or the supplementary of described CDMA 1x RTT network is carried on and is broadcast to described terminal in system message.
4. method according to claim 1, is characterized in that, described method also comprises:
The supplementary of described CDMA 1x RTT network is pre-configured in described LTE system;
Or, the supplementary of described CDMA 1x RTT network is notified to described LTE system to the supplementary of CDMA 1x RTT network described in described LTE system storage.
5. method according to claim 4, is characterized in that, the described supplementary by described CDMA 1x RTT network is notified to described LTE system, comprising:
Described CDMA 1x RTT network is notified described LTE system by the supplementary of described CDMA 1x RTT network by the backhaul interface between described CDMA 1x RTT network and described LTE system.
6. method according to claim 5, is characterized in that, described backhaul interface is S102 tunnel, and described S102 tunnel is via the mutual solution IWS network element of described CDMA 1x RTT network;
Described backhaul interface be new definition for interface mutual between described CDMA 1x RTT 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 CDMA 1x RTT network comprise following information one of at least:
The Physical Cell Identifier of Target cell, access power relevant parameter, maximum access channel message physical size MAX_CAP_SZ, access channel pilot frequency length PAM_SZ, access probe relevant parameter; Described access probe relevant parameter comprise following information one of at least: the Timing randomization PROBE_PN_RAN of access channel probe, confirm that overtime ACC_TMO, access channel probe are kept out of the way scope PROBE_BKOFF, access channel probe sequence is kept out of the way scope BKOFF.
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 terminal to access fast the supplementary of the described CDMA 1x RTT network of CDMA 1x RTT network;
Performance element, for carrying out the redirected access of described CDMA 1x RTT 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 CDMA 1x RTT network.
11. devices according to claim 9, is characterized in that, carry the supplementary of described CDMA 1x RTT network in the message of the redirect command that described receiving element receives;
Or, in the system message that described receiving element receives, carry the supplementary of described CDMA 1x RTT network.
12. according to the device described in claim 9 to 11 any one, it is characterized in that, the supplementary of described CDMA 1xRTT network comprise following information one of at least:
The Physical Cell Identifier of Target cell, access power relevant parameter, maximum access channel message physical size MAX_CAP_SZ, access channel pilot frequency length PAM_SZ, access probe relevant parameter; Described access probe relevant parameter comprise following information one of at least: the Timing randomization PROBE_PN_RAN of access channel probe, confirm that overtime ACC_TMO, access channel probe are kept out of the way scope PROBE_BKOFF, access channel probe sequence is kept out of the way scope BKOFF;
The described message that carries redirect command comprises RRCConnectionRelease message.
13. 1 kinds of terminals, is characterized in that, described terminal comprises the redirected device described in claim 9 to 12 any one.
14. 1 kinds of base stations, is characterized in that, the supplementary of CDMA 1x RTT network is carried in the message or system message that carries redirect command, and sends to terminal.
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| CN107087289A (en) * | 2016-02-16 | 2017-08-22 | 大唐移动通信设备有限公司 | A kind of circuit domain dropping processing method and mobile management entity equipment |
| CN109451549A (en) * | 2019-01-03 | 2019-03-08 | 中国联合网络通信集团有限公司 | Voice backing method, device and terminal device |
| CN109474940A (en) * | 2017-09-08 | 2019-03-15 | 中兴通讯股份有限公司 | Quality of service detection method and device |
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