CN100488140C - Method and system for terminal re-accessing in network in wireless communication network - Google Patents

Method and system for terminal re-accessing in network in wireless communication network Download PDF

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Publication number
CN100488140C
CN100488140C CNB2005101023980A CN200510102398A CN100488140C CN 100488140 C CN100488140 C CN 100488140C CN B2005101023980 A CNB2005101023980 A CN B2005101023980A CN 200510102398 A CN200510102398 A CN 200510102398A CN 100488140 C CN100488140 C CN 100488140C
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terminal
base station
network
access
handover optimization
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CN1980162A (en
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李永茂
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The invention discloses method and system for terminal to reenter into network in wireless communication network in order to quicken accessing network. When terminal reenters into network, using connection configuration information held on network by base station and terminal, and through switching optimized indication domain protocol, the method speeds up procedure for terminal to access network. The system includes base station access control device, terminal access control device, base station access information memory, and terminal access information memory. Since terminal and base station can use configuration parameter at previous connection, the method does not need to carry out negotiation so as to quicken access speed, and save resources of aerial interface.

Description

A kind of in wireless communication networks the method and system of terminal reentry network
[technical field]
The present invention relates to wireless communication field, relate in particular to a kind of in wireless communication networks the method and system of accessing terminal to network.
[background technology]
At present, in wireless communication networks, press the existing standard regulation, terminal will be as long as initial access network will carry out complete access procedure.
Common wireless communication networks has digital mobile telephone system (Global System for Mobilecommunication at present, abbreviation " GSM "), CDMA network (Code Division Multiple Access, abbreviation " CDMA "), WLAN (wireless local area network) (Wireless LAN is called for short " WLAN ") or blueteeth network.
For example, according to the IEEE802.16 standard, terminal all will be finished access procedure before access network.Whole access procedure comprises successively: the down-going synchronous process, obtain up-downgoing parametric procedure, initial adjustment process, negotiate for basic capability process, terminal authentication and key exchange process, registration process, set up the IP connection procedure, settling time synchronizing process, transmit the optional parameters process, set up the connection procedure that presets.Access procedure as shown in Figure 1.
First three process in the above process is mainly used to set up basic communication link, and the process of back then is mainly used to communicate negotiation, the configuration of parameter.Terminal in each process, all need and the base station between carry out mutual.
In wireless communication networks, because portable terminal is movably, and the base station is fixed, so along with portable terminal move pass the overlay area of different base station the time, it can constantly change the base station that communicates with, and to guarantee communication continuity, this process is called switching.
In handoff procedure, portable terminal need disconnect and being connected of current base station (being called serving BS), and connects with switching the purpose base station.Generally speaking, portable terminal is the same with the process of switching process that the purpose base station connects and initial access network, the process of experience Fig. 1.
But because the purpose base station can connect the relevant information that base station (abbreviating serving BS as) obtains portable terminal by backbone network before portable terminal switches, comprise basic capacity, authentication and safe key contextual information and Business Stream link information etc., therefore in order to accelerate handoff procedure, the purpose base station can be after receiving the distance measurement request message (RNG-REQ) that portable terminal sends, when responding distance measurement request response message, be with handover optimization indication territory (Handover Process Optimization is called for short " HO Process Optimization ") in this response message, the notice terminal can be omitted those steps of access procedure.Handover optimization indication territory is defined as follows:
Bit Implication
Bit?#0: Omit the basic capacity protocol procedures
Bit?#1: Omit verification process, but keep TEK reciprocal process
Bit?#2: Omit TEK reciprocal process
Bit?#3: The omitted registration process
Bit?#4: Omit network address acquisition process
Bit?#5: Omit the acquisition time synchronizing process
Bit?#6: Omit the operating parameter acquisition process
Bit?#7: The omission business is set up process (Business Stream and operating parameter are all shared between serving BS and switching purpose base station by backbone network)
During bit set, the expression corresponding process is omitted in handoff procedure.
In order to allow identification of base stations switch user and the initial user of access, terminal in the RNG-REQ message of transmission, has range finding purpose indication territory (Ranging_Purpose_Indication) simultaneously when switching, and the sign of former serving BS (BSID).
The information that the base station obtains the portable terminal of preserving in the network has dual mode: a kind of mode is for before switching, and serving BS sends user profile to the purpose base station by backbone network message; Another kind of mode be the purpose base station after the switching of receiving terminal inserts request, according to the sign (BSID) of former serving BS, inquire about this terminal information to former serving BS.
But, if terminal is for a certain reason,, to lose in short time and being connected of network as power down, it still needs to finish complete access procedure could re-accessing network, even also be connected with same base station, uses identical configuration parameter.If the configuration information when also keeping this terminal this moment in the network and connecting last time, a lot of information of transmitting when terminal inserts again like this are exactly redundant information, do not have necessity of transmission.
[summary of the invention]
The object of the present invention is to provide a kind of when terminal lose for a certain reason with being connected of network after, during the reentry network, utilize the configuration information that is connected that on base station and terminal, keeps, accelerate the scheme of the process of access network.
For achieving the above object, the invention provides a kind of in wireless communication networks the method for terminal reentry network, this method comprises: behind the accessing terminal to network, continue to preserve the relevant information that terminal is transmitted on terminal and the base station in access procedure;
When described terminal is connected disconnection with network after, in the process of described terminal re-accessing network, described base station receives the distance measurement request message from described terminal, carry first handover optimization indication territory in the described distance measurement request message, in described first handover optimization indication territory, for the described relevant information of having stored in the terminal, then the bit of this information correspondence is set;
Described base station inquires about whether store relevant information in the described base station according to the pairing described relevant information of set bit in described first handover optimization indication territory;
If have, then in sending to the ranging response message of described terminal, carry second handover optimization indication territory, and with the corresponding bit set in described second handover optimization indication territory, so that described terminal is omitted the required step of relevant information of transmitting set bit correspondence in described second handover optimization indication territory in the access procedure;
Perhaps, if do not have, then in sending to the ranging response message of described terminal, do not carry second handover optimization indication territory, so that described terminal is carried out complete access procedure.
Described base station detect terminal be connected with network disconnect after, the relevant information that terminal is transmitted in access procedure continues to keep a period of time T.
Described time T can finish once for terminal restart, and synchronous again needed time.
Described method can be used for the wireless communication networks of IEEE802.16 standard.
Described wireless communication networks is GSM network, cdma network, wlan network or blueteeth network.
The invention allows for accordingly a kind of in wireless communication networks the system of terminal reentry network, be used for accelerating the process of accessing terminal to network at wireless communication networks, described system comprises: the base station access control apparatus, the terminal access control apparatus, base station access information memory, terminal access information memory, described terminal access control apparatus comprises, the information receiving and transmitting module, handover optimization indication territory set module, terminal access information memory query module; Described base station access control apparatus comprises, information receiving and transmitting module, handover optimization indication territory set module, base station access information memory query module; Wherein,
Described terminal access information memory is used for preserving the relevant information that this terminal is transmitted at access network process;
Described base station access information memory is used for preserving the relevant information that all terminals of being linked on this base station are transmitted at access network process;
Described information receiving and transmitting module is used for carrying out the message transmission between the base station, terminal access information memory query module is used for the access information that inquiry terminal access information memory is preserved, and handover optimization indication territory set module is carried out set according to the result of inquiry to first handover optimization indication territory;
Described information receiving and transmitting module is used for carrying out the message transmission between the terminal, base station access information memory query module is used for inquiring about the access information that base station access information memory is preserved according to described first handover optimization indication territory, and handover optimization indication territory set module is carried out set according to the result of inquiry to second handover optimization indication territory.
The advantage of method and system of the present invention is, can allow terminal when inserting again, also can consult by message, omit some access procedure, because terminal can be used the configuration parameter that last time was connected that keeps in the network fully with the base station, and need not consult once more, thereby accelerate the terminal access procedure.Owing to reduced interacting message, taken wireless channel less, so saved interface-free resources.
If being equal to send, all set of the handover optimization that terminal sends indication territory, this situation has the distance measurement request message that is used to switch.At this moment, adopt to send and to have the distance measurement request message that is used to switch and the benefit of bringing is, the base station does not need to read the state of each position to handover optimization indication territory, and can directly go whether to store in the requester network relevant information of this terminal, can indicate the mode of the whole set in territory to accelerate access procedure handover optimization than adopting like this, save interface-free resources more.
[description of drawings]
Fig. 1 is the access procedure schematic diagram of terminal initial access network.
Fig. 2 is the information interaction schematic diagram of terminal when not using this method re-accessing network.
Information interaction schematic diagram when Fig. 3 is terminal use this method re-accessing network.
Fig. 4 is the structural representation of a kind of among the present invention system of terminal reentry network in wireless communication networks.
Fig. 5 is the flow chart of a kind of information interaction of system when work among the present invention.
[embodiment]
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
In the IEEE802.16 standard, the information interactive process of terminal when normal the access is shown in 2 figure:
The same BS of terminal (SS) (base station) obtains the up-downgoing parameter synchronously;
SS sends RNG-REQ (distance measurement request message) to BS;
BS sends RNG-RSP (ranging response message) to SS;
SS sends SBC_REQ (message for requesting capability negotiation) to BS;
BS sends SBC_RSP (response message of capability negotiation) to SS;
SS sends AUTH-REQ (authentication request message) to BS;
BS sends AUTH-REPLY (authentication response message) to SS;
SS sends REG-REQ (login request message) to BS;
BS sends REG-RSP (registration reply message) to SS;
Set up IP, settling time synchronously, transmit optional parameters, set up regulation and connect.
As shown in Figure 3, when using this method, terminal will be carried out when re-accessing network according to the following steps:
At first according to normal flow, it is synchronous to carry out up-downgoing, and obtains the up-downgoing parameter; Send RNG_REQ message then to the base station, and be with handover optimization indication territory, capability negotiation and registration process are omitted in request.The base station is by the MAC Address (being also referred to as physical address, hardware address or link address) of RNG_REQ message, and handover optimization indication territory, determine to omit this two steps, in the RNG_RSP message of responding, omit capability negotiation and these two steps of registration process by handover optimization indication notice terminal.Then the base station just can be without receiving ability negotiation request message and login request message, and direct transmitting capacity negotiate response message and registration reply message, as the SBC-RSP among Fig. 3, REG-RSP message.What dot among Fig. 3 is abridged message.
Detailed process is as follows:
The same BS of SS (terminal) (base station) obtains the up-downgoing parameter synchronously;
SS sends the RNG-REQ (distance measurement request message) that has HO Process Optimization (handover optimization indication territory) to BS, in HO Process Optimization, with capability negotiation and the pairing bit set of registration process;
The MAC Address of the RNG_REQ message that BS sends according to SS, and handover optimization indication territory find the relevant capability negotiation stored and the relevant information of registration process in the base station;
BS sends the RNG-RSP (ranging response message) that has HO Process Optimization to SS, in HO Process Optimization, with capability negotiation and the pairing bit set of registration process;
BS sends SBC_RSP (response message of capability negotiation) to SS;
SS sends AUTH-REQ (authentication request message) to BS;
BS sends AUTH-REPLY (authentication response message) to SS;
BS sends REG-RSP (registration reply message) to SS;
Set up IP, settling time synchronously, transmit optional parameters, set up regulation and connect.
Fig. 4 is the structural representation of a kind of among the present invention system of terminal reentry network in wireless communication networks.As shown in FIG., described system comprises:
The base station access control apparatus, terminal access control apparatus, base station access information memory, terminal access information memory.Base station access control apparatus and base station access information memory bit are in the base station, and the base station is arranged in wireless network, is connected by backbone network between the base station.Terminal access control apparatus and terminal access information memory bit are in terminal.
The terminal access control apparatus comprises, information receiving and transmitting module, distance measurement request message transmission module, handover optimization indication territory set module, terminal access information memory query module.
The base station access control apparatus comprises, information receiving and transmitting module, distance measurement request response message sending module, handover optimization indication territory set module, base station access information memory query module.
Wherein,
Described terminal access information memory is used for preserving the relevant information that this terminal is transmitted at access network process;
Described base station access information memory is used for preserving the relevant information that all terminals of being linked on this base station are transmitted at access network process;
Described terminal access control apparatus is used for when accessing terminal to network, according to the information that terminal access information memory is preserved, consults with carrying out message between the access control apparatus of base station, to determine omitting which transmission information in this time access procedure.Wherein, described information receiving and transmitting module is used for carrying out the message transmission between the base station, terminal access information memory query module is used for the access information that inquiry terminal access information memory is preserved, and handover optimization indication territory set module is carried out set according to the result of inquiry to handover optimization indication territory.
Described base station access control apparatus is used for when accessing terminal to network, according to the information that base station access information memory is preserved, consults with carrying out message between the terminal access control apparatus, to determine omitting which transmission information in this time access procedure.Wherein, described information receiving and transmitting module is used for carrying out the message transmission between the terminal, base station access information memory query module is used for inquiring about the access information that base station access information memory is preserved, and handover optimization indication territory set module is carried out set according to the result of inquiry to handover optimization indication territory.
As shown in Figure 5, the detailed process of a kind of information interaction of the system among the present invention when work will be carried out according to the following steps:
At first terminal by the terminal access control apparatus the information receiving and transmitting module and the information receiving and transmitting module of base station access control apparatus according to normal flow, it is synchronous to carry out up-downgoing, and obtains the up-downgoing parameter; Terminal access information memory query module is judged and has been preserved whole access informations and be notified to the terminal access control apparatus in terminal access information memory then; So the terminal access control apparatus passes to handover optimization indication territory set module with this information, and according to handover optimization indication territory set module feedack, the notification message sending module sends the RNG_REQ message that is used to switch to the base station.
The information receiving and transmitting module of base station access control apparatus is received RNG_REQ message, and the base station access control apparatus is passed base station access information memory with this message; Base station access information memory query module is according to the sign and the MAC Address of the former serving BS of RNG_REQ message, from its pairing base station access information memory, find the relevant authentication request of this terminal of having stored and the relevant information of registration process, determine to omit this two steps, and the result that will determine is returned to the base station access control apparatus.The base station access control apparatus is indicated the correspondence position position of capability negotiation and registration process in the territory by handover optimization indication territory set module with handover optimization, and information is returned to the base station access control apparatus; The information receiving and transmitting module of base station access control apparatus is omitted authentication request and these two steps of registration process by handover optimization indication field notice terminal in the RNG_RSP message of responding.Then the base station just can receive authentication request message and login request message, and directly sends next offer message of authentication and registration reply message, as the AUTH-REPLY among Fig. 5, REG-RSP message.
Detailed process is as follows:
The same BS of step 10:SS (terminal) (base station) obtains the up-downgoing parameter synchronously;
The terminal access information memory query module of the terminal access control apparatus of step 20:SS inquires has preserved whole access informations and has been notified to the terminal access control apparatus in terminal access information memory;
So step 30:SS terminal access control apparatus passes to handover optimization indication territory set module with this information, and according to handover optimization indication territory set module feedack, the notification message sending module sends the RNG_REQ message (distance measurement request message) that is used to switch to BS;
Information receiving and transmitting module in the base station access control apparatus of step 40:BS is received the RNG_REQ message that SS sends, and pass to base station access information memory, the sign and the MAC Address of the former serving BS of the RNG_REQ message that the SS that base station access information memory query module is received according to the information receiving and transmitting module sends, from its pairing base station access information memory, find the relevant authentication request of having stored and the relevant information of registration process, determine to omit this two steps;
The base station access control apparatus of step 50:BS is by handover optimization indication territory set module, in HOProcess Optimization, with capability negotiation and the pairing bit set of registration process, and the information receiving and transmitting module by the base station access control apparatus sends the RNG-RSP (ranging response message) of the HO ProcessOptimization that has set information to SS;
Step 60:SS sends SBC_REQ (message for requesting capability negotiation) to BS;
Step 70:BS sends SBC_RSP (response message of capability negotiation) to SS;
Step 80:BS sends AUTH-REPLY (authentication response message) to SS;
Step 90:BS sends REG-RSP (registration reply message) to SS;
Step 100: set up IP, settling time synchronously, transmit optional parameters, set up regulation and connect.

Claims (6)

1, a kind of in wireless communication networks the method for terminal reentry network, it is characterized in that this method comprises:
Behind the accessing terminal to network, continue to preserve the relevant information that terminal is transmitted on terminal and the base station in access procedure;
When described terminal is connected disconnection with network after, in the process of described terminal re-accessing network, described base station receives the distance measurement request message from described terminal, carry first handover optimization indication territory in the described distance measurement request message, in described first handover optimization indication territory, for the described relevant information of having stored in the terminal, then the bit of this information correspondence is set;
Described base station inquires about whether store relevant information in the described base station according to the pairing described relevant information of set bit in described first handover optimization indication territory;
If have, then in sending to the ranging response message of described terminal, carry second handover optimization indication territory, and with the corresponding bit set in described second handover optimization indication territory, so that described terminal is omitted the required step of relevant information of transmitting set bit correspondence in described second handover optimization indication territory in the access procedure;
Perhaps, if do not have, then in sending to the ranging response message of described terminal, do not carry second handover optimization indication territory, so that described terminal is carried out complete access procedure.
2, method according to claim 1 is characterized in that, described terminal is connected disconnection with network after, base station and terminal are transmitted terminal respectively in access procedure relevant information continues to keep a period of time T.
3, method according to claim 2 is characterized in that, described time T be terminal finish once restart, and synchronous again needed time.
4, method according to claim 1 is characterized in that, described method can be used for the wireless communication networks of IEEE802.16 standard.
5, method according to claim 1 is characterized in that, described wireless communication networks is GSM network, cdma network, wlan network or blueteeth network.
6, a kind of system that in wireless communication networks, makes terminal reentry network, be used for accelerating the process of accessing terminal to network at wireless communication networks, described system comprises: base station access control apparatus, terminal access control apparatus, base station access information memory, terminal access information memory; Described terminal access control apparatus comprises, information receiving and transmitting module, handover optimization indication territory set module, terminal access information memory query module; Described base station access control apparatus comprises, information receiving and transmitting module, handover optimization indication territory set module, base station access information memory query module; Wherein,
Described terminal access information memory is used for preserving the relevant information that this terminal is transmitted at access network process;
Described base station access information memory is used for preserving the relevant information that all terminals of being linked on this base station are transmitted at access network process;
The described information receiving and transmitting module of described terminal access control apparatus is used for carrying out the message transmission between the base station, terminal access information memory query module is used for the access information that inquiry terminal access information memory is preserved, and handover optimization indication territory set module is carried out set according to the result of inquiry to first handover optimization indication territory;
The described information receiving and transmitting module of described base station access control apparatus is used for carrying out the message transmission between the terminal, base station access information memory query module is used for inquiring about the access information that base station access information memory is preserved according to described first handover optimization indication territory, and handover optimization indication territory set module is carried out set according to the result of inquiry to second handover optimization indication territory.
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