CN101111068A - Mobile terminal and communication method for gateway access - Google Patents
Mobile terminal and communication method for gateway access Download PDFInfo
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- CN101111068A CN101111068A CNA2006101071601A CN200610107160A CN101111068A CN 101111068 A CN101111068 A CN 101111068A CN A2006101071601 A CNA2006101071601 A CN A2006101071601A CN 200610107160 A CN200610107160 A CN 200610107160A CN 101111068 A CN101111068 A CN 101111068A
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Abstract
The present invention discloses a communication method between a mobile terminal and an access gateway, which comprises that a destination address of a message is arranged into a dedicated address identified by the access gateway during the process of the communication between the mobile terminal and the access gateway, the access gateway acquires that the message is a signaling between the mobile terminal and the access gateway according to the dedicated address and performs the relevant processing. The present invention enables the destination access gateway to normally deal with oneself and a signaling of the mobile terminal.
Description
Technical field
The present invention relates to professional mobile management field, the communication means of particularly a kind of portable terminal and IAD.
Background technology
The CDMA2000 system comprises CDMA 1x network and HRPD (high rate packet data) (HRPD) network, and the data rate up to 153.6kbps can be provided, and supports grouping data services such as video request program (VOD), network gaming, high-speed data download.In the CDMA2000 system, it is very important carrying out the service mobility management effectively, and one of purpose of professional mobile management is to guarantee professional continuity when the transition of portable terminal occurrence positions.
The packet domain structure chart of CDMA2000 system as shown in Figure 1, among the figure solid line be the carrying data transmission channel, dotted line is the transmission channel of signaling.Packet data serving node (PDSN) inserts IP network by PPP(Point-to-Point Protocol) with portable terminal, and the route of next jumping is provided for packet data package simultaneously, and by IP control protocol (IPCP) be portable terminal distributing IP address.
In the CDMA2000 system, if switch between the Access Network (AN) that connects identical PDSN, the service PDSN before and after promptly switching is same PDSN, and then this switching is called as in the PDSN switches; If switch between the AN that connects different PDSN, the service PDSN before and after promptly switching is not same PDSN, and this switching is called as between PDSN switches.For switching in the PDSN, owing to do not change access point, do not relate to the change of IP address, can keep professional continuity so only need to carry out link switchover.And for switching between PDSN, change has taken place in access point, and can't keep professional continuity this moment by simple link switchover, need otherwise keep professional continuity.
In CDMA 1x system, when the coverage that moves to another PDSN in terminal causes switching between PDSN, carry out forwarding of data by layer two tunnel between two PDSN, make the PPP end points maintain source PDSN and do not change access point, the address that can keep terminal is constant, thereby keeps professional continuity.
But, if the PPP end points maintains source PDSN and does not change, can cause during the alive packet session, A10 connect and PDSN-PDSN (P-P) between be connected existence simultaneously, thereby increased the burden of source PDSN, consumed the processing resource of source PDSN and the link circuit resource between PDSN.So between the PDSN of HRPD network in the handoff procedure, the session state transfer of the source PDSN target P DSN after switch can be gone up, make the Network Access Point of portable terminal become target P DSN, its switching flow specifically comprises:
1) portable terminal carries out switching between PDSN, sets up target access network and connects to the A10 between target P DSN;
2) the target P DSN P-P that is established to source PDSN connects, and source PDSN is transferred to target P DSN with session context information such as peer-peer protocol (PPP) state of this portable terminal, QoS parameter, mobility status, and target P DSN sets up the session status of this terminal;
3) source PDSN connects to target P DSN transmission data by P-P, and target P DSN forwards the data to target access network, and corresponding session management and data processing are all carried out at target P DSN, and the IP address of portable terminal remains unchanged;
4) source PDSN discharge with the source Access Network between A10 be connected.
In addition, target P DSN also can use the proxy-mobile IP signaling to register to home agent (HA) after portable terminal takes place to switch between PDSN, and the IP address of portable terminal and the address of target P DSN are bound, at this moment, HA can again that the outside is next grouped data not send to source PDSN.When mobile terminal sleep or again during consulting session, perhaps target P DSN has carried out by proxy-mobile IP after HA registers, and target P DSN discharges its P-P to source PDSN and connects.
At present, third generation partner plans 2 (3GPP2) normal structure and is carrying out the research of network evolution items, its main purpose strengthens packet switched capabilities exactly, simplifies network configuration, improves QoS, reduces time delay, improves user data rate, improves power system capacity and coverage rate, minimizing operation cost etc., make packet network after the evolution that the carrying to real time business and non-real-time service can more effectively be provided, for the user provides abundant more business.
The structure of evolvement network wherein, is controlled access point (CAP) and is had the function of IAD (AGW) and RRM as shown in Figure 2.The major function of IAD is first hop router as portable terminal, and the function of the former PDSN of part such as mobile management, QoS support.And RRM comprises public resource management, private resource management, wireless session management, the session status of safeguarding portable terminal, Radio Link Management etc.Network mobility agency (NMA) provides layer three (L3) mobility management mechanism between the CAP, does not need the mobile IP signaling of eating dishes without rice or wine.
Portable terminal is when cut-in evolution network, and effective in the scope of whole NMA by the address that CAP obtains, CAP registers binding with the address of portable terminal and the address of CAP itself at NMA, so that data can correct route.So when carrying out switching between the CAP, do not need to change the address.After the registration binding, the grouped data of the portable terminal that NMA receives will send to target CAP, be forwarded to portable terminal by target CAP again.Its switching flow is specially:
1) portable terminal carries out switching between CAP, and source CAP is transferred to target CAP by signaling with the session context information of portable terminal;
2) target CAP initiates the registration binding to NMA, and correspondence is carried out in the address of portable terminal and the address of target CAP.After the registration binding, the grouped data that sends to portable terminal that NMA receives will be transmitted to target CAP, be transferred to portable terminal by target CAP again.
Between above-mentioned AGW in the handoff procedure, comprise switch between the PDSN in CDMA 1x network, the HRPD network and evolvement network in CAP between switch, portable terminal does not also know to switch the address of back AGW.When portable terminal and AGW carried out Signalling exchange, the target of signaling remained source AGW.After target AGW received signaling between portable terminal and AGW, because the destination address of signaling is not oneself, can cause can't normal process.
For example, in the HRPD network, if taken place to switch between PDSN, the session state transfer of portable terminal has arrived the target P DSN after switching, and the stream mapping also target P DSN after switching is carried out.In case any composition of traffic flow template (TFT) changes, change as increase/deletion Media Stream, change stream processing mode, destination address or port, portable terminal will use resource reservation protocol (rsvp) signaling update TFT.But because terminal and do not know that the PDSN of managing mobile terminal shifts, so the destination address of RSVP message remains source PDSN's.After target P DSN receives RSVP message, because destination address is not oneself, target P DSN will can not handle accordingly.Cause like this and can can't carry out TFT renewal operation by portable terminal.
Summary of the invention
The object of the present invention is to provide the communication means of a kind of portable terminal and IAD, make portable terminal after taking place to switch between IAD, new IAD can normal process self and the signaling of portable terminal.
For achieving the above object, the invention provides the communication means of a kind of portable terminal and IAD, comprising:
When portable terminal is communicated by letter with IAD, the destination address of message is set to the discernible specific address of described IAD, described IAD knows that according to described specific address this message is the signaling between described portable terminal and the IAD, and carries out respective handling.
When portable terminal is communicated by letter with IAD, use the unicast address of IAD to send signaling, when behind the timer expiry that repeats to send repeatedly or pre-set, still not obtaining response, use the specific address to send signaling as destination address;
Described IAD knows that according to described specific address this message is the signaling between described portable terminal and the IAD, and carries out respective handling.
After described IAD processing finishes, the unicast address of source address for self is set in replying to the signaling of described portable terminal;
Described portable terminal is when sending between follow-up portable terminal and IAD signaling, and destination address is set to the unicast address of described IAD.
Described specific address is the broadcast address of IPv4.
Described specific address is the multicast address of IPv6.
The particular unicast address that be used to discern portable terminal and IAD between Signalling exchange of described specific address for keeping.
When communicating by letter with target access gateway, the destination address of message is set to the discernible specific address of target access gateway by portable terminal in the present invention, makes that target access gateway can normal process self and the signaling of portable terminal.
Description of drawings
Fig. 1 is the packet domain structure chart of CDMA2000 system in the background technology;
Fig. 2 is the structure chart of evolvement network in the background technology;
Fig. 3 is the flow chart of the communication means of portable terminal and IAD in the embodiments of the invention one;
Fig. 4 is the flow chart of the communication means of portable terminal and IAD in the embodiments of the invention two.
Embodiment
When communicating by letter with target access gateway, the destination address of message is set to the discernible specific address of target access gateway by portable terminal in the present invention, makes that target access gateway can normal process self and the signaling of portable terminal.
Embodiment one:
Fig. 3 is the flow chart of the communication means of portable terminal and IAD in the embodiments of the invention one,
The concrete following steps of carrying out:
Before carrying out this flow process, if the switching between PDSN has taken place in portable terminal, the contextual information of portable terminal has been sent on the target P DSN, then Resv message can be transmitted to the current target P DSN that is subordinate to of portable terminal by target access network, owing to be provided with predetermined specific address in the message, so target P DSN can carry out respective handling to this message.
Embodiment two:
Fig. 4 is the flow chart of the communication means of portable terminal and IAD in the embodiments of the invention two,
The concrete following steps of carrying out:
After step 404, portable terminal obtain the address of current PDSN, the Resv message of follow-up transmission, its target ip address is set to the address of current PDSN.
Before carrying out this flow process, if the switching between PDSN has taken place in portable terminal, its contextual information has been sent on the target P DSN, then the destination address of the Resv message of this portable terminal transmission is PDSN address, source, after target P DSN receives this message, because destination address is not the address of self, so can not carry out respective handling to this message.And portable terminal is not received response repeating repeatedly to send Resv, perhaps behind the timer expiry of She Dinging, can resend the Resv message of destination address for predetermined specific address, after target P DSN receives this message, can carry out respective handling to it.
In the present invention, the particular unicast address that is used to discern Signalling exchange between portable terminal and the IAD that the address of target access gateway also can be set to keep for example can be 1.1.1.1.
In addition, enforcement of the present invention is not limited in switches this a kind of situation of back transmission Resv message between portable terminal generation IAD, the IAD that sends with current service when portable terminal is a destination address, and when needing message that the service IAD handles according to this terminal session state, all can adopt method of the present invention.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (6)
1. the communication means of portable terminal and IAD is characterized in that, comprising:
When portable terminal is communicated by letter with IAD, the destination address of message is set to the discernible specific address of described IAD, described IAD knows that according to described specific address this message is the signaling between described portable terminal and the IAD, and carries out respective handling.
2. the communication means of portable terminal according to claim 1 and IAD is characterized in that, this method specifically comprises:
When a, portable terminal are communicated by letter with IAD, use the unicast address of IAD to send signaling, when behind the timer expiry that repeats to send repeatedly or pre-set, still not obtaining response, use the specific address to send signaling as destination address;
B, described IAD are known that according to described specific address this message is the signaling between described portable terminal and the IAD, and are carried out respective handling.
3. the communication means of portable terminal according to claim 2 and IAD is characterized in that, also comprises after the described step b:
After described IAD processing finishes, the unicast address of source address for self is set in replying to the signaling of described portable terminal;
Described portable terminal is when sending between follow-up portable terminal and IAD signaling, and destination address is set to the unicast address of described IAD.
4. according to the communication means of claim 1,2 or 3 described portable terminals and IAD, it is characterized in that described specific address is the broadcast address of IPv4.
5. according to the communication means of claim 1,2 or 3 described portable terminals and IAD, it is characterized in that described specific address is the multicast address of IPv6.
6. according to the communication means of claim 1,2 or 3 described portable terminals and IAD, it is characterized in that the particular unicast address that be used to discern portable terminal and IAD between Signalling exchange of described specific address for keeping.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006101071601A CN101111068A (en) | 2006-07-21 | 2006-07-21 | Mobile terminal and communication method for gateway access |
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| CNA2006101071601A CN101111068A (en) | 2006-07-21 | 2006-07-21 | Mobile terminal and communication method for gateway access |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909276B (en) * | 2009-06-04 | 2013-01-23 | 中国移动通信集团公司 | Mobile multicast switching method, system and relevant equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909276B (en) * | 2009-06-04 | 2013-01-23 | 中国移动通信集团公司 | Mobile multicast switching method, system and relevant equipment |
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