CN100334891C - Method for realizing business reorientation - Google Patents

Method for realizing business reorientation Download PDF

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Publication number
CN100334891C
CN100334891C CNB031497446A CN03149744A CN100334891C CN 100334891 C CN100334891 C CN 100334891C CN B031497446 A CNB031497446 A CN B031497446A CN 03149744 A CN03149744 A CN 03149744A CN 100334891 C CN100334891 C CN 100334891C
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network
dual
mode terminal
hrpd
type
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CN1581996A (en
Inventor
谭莹
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The present invention discloses a method for realizing business reorientation. The method comprises the steps that a cdma20001x network side sends a business reorientation message carrying the reorientation identification type of reorientating a 1 x/DO dual-mode terminal to an HRPD network to the 1 x/DO dual-mode terminal; after the dual-mode terminal receives the business reorientation message, the dual-mode terminal is switched to the HRPD network according to the reorientation identification type. The method of the present invention realizes the business reorientation from a cdma20001x system to an HRPD system, and is capable of guiding the 1 X/DO dual-mode terminal to use the HRPD network when the 1 X/DO dual-mode terminal applies for data business. Consequently, the load pressure of the cdma20001x network is lightened, and the access of speech users of the cdma20001x network is ensured.

Description

A kind of implementation method of carrying out network redirection
Technical field
The present invention relates to the network redirection technology in the mobile communication system, be meant the implementation method from cdma2000 1x network redirection to high-speed packet data service (HRPD) network especially the 1x/DO dual-mode terminal.
Background technology
Network redirection can make the user register or be redirected to other system from a system when making a call.Be redirected and be divided into two kinds: a kind of is that the overall situation is redirected, and issues with system message, and guiding lowest version terminal preferentially goes up the lowest version network; Another kind is professional being redirected, business service network more suitably on the guiding user.Network redirection distributing terminals better is resident or be linked into more suitably network, realizes the optimization of Internet resources, increases the capacity of network.Generally speaking, if be redirected failure, the user can return current system.Defined the network directional system in the cdma2000 1x system and selected (NDSS), the signatory and different demand for services according to different is redirected to the user more suitably network automatically.This more suitably network provider can be any system, can be different frequency range, standards (analog or digital).For example, under the simultaneous situation of 3G system and 2G system, the dual-mode terminal of a 2G/3G can be redirected to the 2G system from the 3G system when initiating audio call.
In the standard of HRPD, stipulated to be redirected to cdma2000 1x network from HRPD.But because the appearance of HRPD network is later, the business that only defined in the cdma2000 1x standard is redirected to cdma system, analogue system flow process, professional redirect message form, and definition is not redirected to the HRPD system from the cdma20001x system.
Redirect message comprises professional redirect message (SRDM), TBW directed message (GSRDM) and expansion TBW directed message (EGSRDM) in the cdma2000 1x standard.These three kinds of redirect messages are respectively applied for different environment.
Be that example elaborates the redirect message parameter with SRDM message below.
Ginseng is shown in Table 1, and the parameter of professional redirect message (SRDM) comprises that being redirected failure indicates (RETURN_IF_FAIL), deletion TMSI indication (DELETE_TMSI), is redirected type indication (REDIRECT_TYPE).The value of deletion TMSI indication is 1, and the TMSI of travelling carriage is distributed in the requirement deletion of expression base station, and the value of deletion TMSI indication is 0, and the expression base station does not require deletes the TMSI that distributes to travelling carriage.REDIRECT_TYPE is 0, expression Normal redirection; REDIRECT_TYPE is 1, expression NDSS redirection.
Field Length(bits)
RETURN_IF_FAIL 1
DELETE_TMSI 1
REDIRECT_TYPE 1
Table 1
RECORD_TYPE 8
RECORD_LEN 8
Type-specific field 8×RECORD_LEN
Table 2
Ginseng is shown in Table 2, and the REDIRECT_TYPE territory is made of following subdomain again: be redirected and know atypical type (RECORD_TYPE), identification length RECORD_LEN and three subdomains of Type-specific field.RECORD_TYPE is 8 bits, and RECORD_LEN is 8 bits, and Type-specificfield occupies 8 * RECORD_LEN bit.
Ginseng is shown in Table 3, and RECORD_TYPE is defined as follows:
Description RECORD_TYPE(binary)
NDSS off indication 00000000
Redirection to an analog system 00000001
Redirection to a cdma system 00000010
Redirection to a TACS analog system 00000011
Redirection to a JTACS analog system 00000100
All other RECORD_TYPE values are reserved
Table 3
When RECORD_TYPE was 00000000, expression was not redirected; When RECORD_TYPE was 00000001, expression was directed to analogue system; When RECORD_TYPE was 00000010, expression was directed to the cdma system; When RECORD_TYPE was 00000011, expression was directed to the TACS analogue system; When RECORD_TYPE was 00000100, expression was directed to the JTACS analogue system; All the other fields are reserved field.
When RECORD_TYPE was above-mentioned different numerical value, Type-specific field can comprise some subdomains again.Such as, ginseng is shown in Table 4, when RECORD_TYPE was 00000010, Type-specific field territory comprised band information (BAND_CLAS), expansion SID (EXPECTED_SID), expansion NID (EXPECTED_NID), reserved field (RESERVED), CMDA network channel number (NUM_CHANS), cdma network channel number (cdma_CHAN) and reserved field a plurality of subdomains such as (RESERVED) again.Wherein, BAND_CLAS is 5 bits, and EXPECTED_SID is 15 bits, and EXPECTED_NID is 16 bits, and RESERVED is 4 bits, and NUM_CHANS is 4 bits.And the number of cdma network channel number (cdma_CHAN) is identical with NUM_CHANS numerical value.
Subdomain Length (bits)
BAND_CLASS 5
EXPECTED_SID 15
EXPECTED_NID 16
RESERVED 4
NUM_CHANS 4
Comprise NUM_CHANS following territory:
cdma_CHAN 11
RESERVED 0-7(as needed)
Table 4
After terminal receives this professional redirect message,, start and be redirected flow process, be directed to other and more suitably go in the network,, return current network again if be redirected failure according to the directed information in the message.
In sum, can not make in the prior art 1x/DO dual-mode terminal from cdma2000 1x network redirection to the HRPD network, therefore, the HRPD network can't be shared the business load of cdma2000 1x network.
Summary of the invention
The purpose of this invention is to provide a kind of implementation method of carrying out network redirection, make the 1x/DO dual-mode terminal from cdma2000 1x network redirection to the HRPD network, make the HRPD network can share the business load of cdma2000 1x network.
A kind of implementation method of carrying out network redirection comprises:
The 1x/DO dual-mode terminal resides in the cdma2000 1x network, and initiates position register request to cdma2000 1x network side;
Cdma2000 1x network side sends to described 1x/DO dual-mode terminal and carries the professional redirect message that the 1x/DO dual-mode terminal is redirected to HRPD network redirection identification types; After this dual-mode terminal was received this business redirect message, the redirected identification types according to wherein switched in the HRPD network.
Described professional redirect message is that the parameter that is directed to the HRPD system further is set in the RECORD of EGSRDM/GSRDM/SRDM message parameter TYPE subdomain.
The parameter of the described HRPD of being redirected to system is that the value of any one field in the RECORD TYPE subparameter reserved field is set to be directed to the HRPD system.
The pairing Type-specific field of described RECORD TYPE subdomain subdomain further comprises message identifier (MessageID), channel number (NumChannel) and channel (Channel) again.
Described Channel further comprises system type (SystemType), BandClass and ChannelNumber again.
It is the message that redefines that described business resets message.
The present invention is used for the professional redirection parameter of 1x/DO dual-mode terminal cdma2000 1x network redirection to the HRPD network by setting in advance, thereby realizes 1x/DO dual-mode terminal cdma2000 1x network redirection to the HRPD network.This method is simple, reliable.Use method of the present invention and realize the network redirection of cdma system to the HRPD system, bootable 1x/DO dual-mode terminal is resident to the HRPD network, thereby alleviates the load pressure of cdma2000 1x network, guarantees cdma2000 1x voice-over-net user's access.
Description of drawings
Fig. 1 is for realizing the specific embodiment one flow process schematic diagram of the inventive method;
Fig. 2 is for realizing the specific embodiment two flow process schematic diagrames of the inventive method.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The present invention is used for the professional redirection parameter of 1x/DO dual-mode terminal from cdma2000 1x network directional to the HRPD network by setting in advance, when cdma2000 1x network side is redirected to the HRPD network owing to the decision of reasons such as resource with certain the 1x/DO dual-mode terminal in the present networks, send the professional redirect message that sets in advance to the 1x/DO dual-mode terminal; After this dual-mode terminal is received this business redirect message, select directed HRPD network, and switch in the HRPD network.
Cdma2000 1x network redirection can be obtained by dual mode to the professional redirection parameter of HRPD network.First kind is to obtain by redefining; Second kind is further to increase the subparameter of cdma2000 1x network redirection to the HRPD network in existing professional redirection parameter.
With existing EGSRDM/GSRDM/SRDM message parameter professional redirection parameter used in the present invention being set below is example, and service parameter used in the present invention is described.Ginseng is shown in Table 5, and present embodiment is that arbitrary fields in the selection reserved field in RECORD_TYPE territory in original redirect message parameter-EGSRDM/GSRDM/SRDM message is directed to the HRPD network.Such as: RECORD_TYPE is 00000101, indicates the 1x/DO dual-mode terminal from cdma2000 1x network redirection to the HRPD network.
Description RECORD_TYPE(binary)
NDSS off indication 00000000
Redirection to an analog system 00000001
Redirection to a cdma system 00000010
Redirection to a TACS analog system 00000011
Redirection to a JTACS analog system 00000100
Redirection to a HRPD system 00000101
All other RECORD_TYPE values are reserved
Table 5
Ginseng is shown in Table 6, and when RECORD_TYPE is 00000101, Type-specific field territory further comprises message identifier (MessageID), channel number (NumChannel) and channel (Channel) again.Wherein, MessageID is set to 0x00, takies 8 bits, and NumChannel takies 8 bits for comprise the quantity of channel in this message, and Channel is the available channel of terminal, and the number of Channel is n, and n is identical with the value of NumChannel.
Field Length(bits)
MessageID 8
NumChannel 8
Comprise NumChannel following territory:
Channel 24
Table 6
Ginseng is shown in Table 7, and Channel further comprises system type (SystemType), band information (BandClass) again, comprises the channel number (ChannelNumber) of frequency assignment information.
Field Length(bits)
SystemType 8
BandClass 5
ChannelNumber 11
Table 7
Present embodiment is to utilize the reserved field in the RECORD_TYPE territory in the EGSRDM/GSRDM/SRDM message to be defined as the professional content that is redirected the HRPD network, original message is changed little, after the change, also can compatible existing system, do not influence the use of original terminal.Describe the professional redirect message that utilization sets in advance in detail referring to attached Fig. 1 and 2, the 1x/DO dual-mode terminal is redirected to the process of HRPD network.
In actual applications, having two kinds of situations will carry out business is redirected: a kind of situation is that the 1x/DO dual-mode terminal initiates to begin to exhale to cdma2000 1x network, think that the HRPD network more is suitable for this dual-mode terminal business service is provided, in this case, be redirected by business, this dual-mode terminal is redirected to the HRPD network, in the HRPD network, obtains service; Another kind of situation is that the 1x/DO dual-mode terminal need be when cdma2000 1x network carries out location registers, and network side thinks that this dual-mode terminal to the suitable HRPD of residing in network, is redirected by business, the resident HRPD network of guiding user.
Referring to shown in Figure 1, it is as follows that cdma2000 1x network will be initiated the detailed process that the beginning 1x/DO dual-mode terminal of exhaling is redirected to the HRPD network:
Step 101,1x/DO dual-mode terminal are initiated the beginning to the base station sub-system of cdma2000 1x network and are exhaled;
Step 102, base station sub-system are sent CM (Connection Management) service request to mobile switching centre (MSC) after receiving that the beginning of this dual-mode terminal exhales, and start timer T 303
After step 103, MSC receive this request of connecting, send the redirection business indication that this dual-mode terminal is redirected to the HRPD network, stop timer T to base station sub-system 303
Step 104, base station sub-system send professional redirect message to this dual-mode terminal after receiving this redirection business indication; After terminal is received this business redirect message, select directed HRPD network according to the Type-specific field territory in this business redirect message.Because Type-specific field territory further comprises message identifier (MessageID), channel number (NumChannel) and channel (Channel) again, therefore, after this dual-mode terminal is received this business redirect message, can determine to want directed HRPD network and the channel resource information in the HRPD network up till now according to wherein parameter.
Step 105, this dual-mode terminal will self switch in the corresponding HRPD network according to the information of determining in the step 104, set up session connection with Access Network (the AN)/Packet Control Function (PCF) of HRPD network.
The Access Network authentication of step 106～107, HRPD network, charging, authentication center (AN AAA) carry out authentication to this dual-mode terminal, and after authentication was passed through, this dual-mode terminal was set up with the HRPD network by packet data serving node (PDSN) and called out.
Referring to shown in Figure 2, cdma2000 1x network will reside in the 1x/DO dual-mode terminal of cdma2000 1x network, and the detailed process that is redirected to the HRPD network is as follows:
Step 201,1x/DO dual-mode terminal are initiated position register request to cdma2000 1x network.
After the request of this location registers is received in the base station (BS) of step 202, cdma2000 1x network, the position register information of this dual-mode terminal is sent to MSC, starts timer T simultaneously 3210
After step 203, MSC received this position register information, decision was redirected to the HRPD network with this dual-mode terminal, sent redirect command to base station sub-system, stopped timer T simultaneously 3210
After step 204, base station sub-system are received this redirect command, it is redirected to the professional redirect message of HRPD network to this dual-mode terminal transmission; After this dual-mode terminal is received this business redirect message, select directed HRPD network; Because Type-specific field territory further comprises message identifier (MessageID), channel number (NumChannel) and channel (Channel) again, therefore, after this dual-mode terminal is received this business redirect message, can determine the HRPD network of wanting directed and the information such as channel that take according to parameter wherein.
Step 205, this dual-mode terminal switch to corresponding HRPD network, and set up session connection (Session) with the AN of HRPD network.Certainly, if there have been session connection in terminal and HRPD network, need not newly to set up session this moment, this dual-mode terminal is resident this HRPD network directly, monitors HRPD network control channel massage.
Need to prove that the switching of above-mentioned steps 105 and step 205 is that the 1x/DO dual-mode terminal is redirected identification types according to the business of receiving, utilizes the standard switching flow to realize.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1, a kind of implementation method of carrying out network redirection is characterized in that, this method comprises:
The 1x/DO dual-mode terminal resides in the cdma2000 1x network, and initiates position register request to cdma2000 1x network side;
Cdma2000 1x network side sends to described 1x/DO dual-mode terminal and carries the professional redirect message that the 1x/DO dual-mode terminal is redirected to the redirected identification types of HRPD network; After this dual-mode terminal was received this business redirect message, the redirected identification types according to wherein switched in the HRPD network.
2, method according to claim 1 is characterized in that, described professional redirect message is that the parameter that is directed to the HRPD system further is set in the RECORD_TYPE of EGSRDM/GSRDM/SRDM message parameter subdomain.
3, method according to claim 2 is characterized in that, the parameter of the described HRPD of being redirected to system is that the value of any one field in the RECORD_TYPE subparameter reserved field is set to be directed to the HRPD system.
4, method according to claim 3 is characterized in that, the pairing Type-specific field of described RECORD_TYPE subdomain subdomain further comprises message identifier MessageID, channel number NumChannel and channel Channel again.
5, method according to claim 4 is characterized in that, described Channel further comprises system type SystemType, BandClass and ChannelNumber again.
6, method according to claim 1 is characterized in that, it is the message that redefines that described business resets message.
CNB031497446A 2003-08-04 2003-08-04 Method for realizing business reorientation Expired - Lifetime CN100334891C (en)

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