CN101790131A - MEID supporting method and system for digital trunk terminal - Google Patents
MEID supporting method and system for digital trunk terminal Download PDFInfo
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Abstract
The invention discloses an MEID supporting method and an MEID supporting system for a digital trunk terminal. The method comprises the following steps: sending a message carrying MEID supporting indication information to a base station by using the digital trunk terminal; decoding an expansion channel assignment message (ECAM) from the base station by using the digital trunk terminal to acquire a unique common long code mask PLCM field; and calculating the message according to the PLCM field by using the digital trunk terminal to acquire a long code mask and setting the long code mask as the long code mask of a channel. According to the technical scheme provided by the invention, uniqueness of the long code mask generated according to ESN can be ensured, so the digital trunk terminal supports MEID.
Description
Technical field
The present invention relates to the communications field, support the method and system of MEID in particular to a kind of digital packet terminal.
Background technology
Digital aggregated communication system is an important branch of mobile communcations system, is a kind of mobile communcations system that is applied to group's dispatch control communication.The Digital Clustering business features is to adopt the mode of one-to-many, i.e. transmit leg user, a plurality of recipient users.For conserve system resources, be provided with forward shared channel and reversed shared channel, promptly a plurality of users share a forward channel or backward channel.
At present, in digital aggregated communication system, terminal is used mobile device identification code (Mobile Equipment Identifier, abbreviate MEID as) when sticking into row communication, for shared channel and independent channel, system all generates the long code of plcm_32 field according to group message, and is sent to terminal, behind the decoding terminals by calculating Long Code Mask and being provided with.
Yet, when terminal uses MEID to stick into row communication, be to generate a pseudo-ESN (can represent) by algorithm in fact, and generate the PLCM of 32bit based on this puppet ESN with p_ESN by the MEID number.But have a problem, generate the p_ESN of 32bit by the MEID of 56bit, this conversion is not man-to-man relation, but many-to-one relation.When the p_ESN that generates as different MEID is identical, can cause the problem of long code collision.
Hence one can see that, in the Digital Clustering communication, can't guarantee the uniqueness according to the Long Code Mask of ESN generation.This will cause the digital packet terminal conflict, and failure is set up in communication.
Summary of the invention
At correlation technique in the Digital Clustering communication, can't guarantee the problem of the uniqueness of the Long Code Mask that generates according to ESN, main purpose of the present invention is to provide a kind of and supports the method and system of MEID based on the terminal of Digital Clustering, one of to address the above problem at least.
According to an aspect of the present invention, provide a kind of digital packet terminal to support the method for MEID.
Support the method for mobile device identification code MEID may further comprise the steps according to digital packet terminal of the present invention: digital packet terminal sends to the base station and carries the message of supporting the MEID indication information; The extended channel assignment messages ECAM that digital packet terminal will come from the base station decodes and obtains unique shared Long Code Mask PLCM field; And digital packet terminal calculates according to the PLCM field and obtains Long Code Mask, and is set to the Long Code Mask of channel.
According to a further aspect in the invention, provide a kind of digital packet terminal to support the system of MEID.
Support the system of mobile device identification code MEID to comprise according to digital packet terminal of the present invention: digital packet terminal with lower device, be used for sending the message that carries support MEID indication information to the base station, the extended channel assignment messages ECAM that will come from the base station decodes and obtains unique shared Long Code Mask PLCM field, and calculates the Long Code Mask that obtains Long Code Mask and be set to channel according to the PLCM field; And the base station, be used to receive the message of supporting the MEID indication information that carries that comes from terminal, send ECAM to terminal.
By the present invention, the extended channel assignment messages (ECAM) of supporting the digital packet terminal of MEID will come from the base station is decoded and is obtained unique shared Long Code Mask (PLCM) field, and calculate according to the PLCM field and to obtain Long Code Mask, and this Long Code Mask is set.Solve correlation technique in the Digital Clustering communication, can't guarantee the problem of the uniqueness of the Long Code Mask that generates according to ESN, and then can guarantee that the Long Code Mask that generates according to ESN is unique, made digital packet terminal support MEID.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is a schematic flow sheet of setting up Traffic Channel according to the caller of correlation technique;
Fig. 2 is the called schematic flow sheet of setting up Traffic Channel according to correlation technique;
Fig. 3 is a structured flowchart of supporting the system of MEID according to the digital packet terminal of the embodiment of the invention;
Fig. 4 is that digital packet terminal is supported the structured flowchart of the system of MEID according to the preferred embodiment of the invention;
Fig. 5 is a flow chart of supporting the method for MEID according to the digital packet terminal of the embodiment of the invention;
Fig. 6 is the flow chart that sends call message according to the terminal of the embodiment of the invention;
Fig. 7 is the flow chart according to the terminal answer group page response of the embodiment of the invention;
Fig. 8 is the flow chart according to the terminal processes ECAM message of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
According to the embodiment of the invention, at first provide a kind of digital packet terminal to support the system of MEID.
Fig. 3 is a structured flowchart of supporting the system of MEID according to the digital packet terminal of the embodiment of the invention.As shown in Figure 3, this system comprises with lower device: digital packet terminal 1 and base station 2.
Digital packet terminal 1, be used for sending the message that carries support MEID indication information to the base station, the extended channel assignment messages ECAM that will come from the base station decodes and obtains unique shared Long Code Mask PLCM field, and calculating is obtained Long Code Mask and this Long Code Mask is set according to the PLCM field;
Base station 2 is used to receive the message of supporting the MEID indication information that carries that comes from terminal, sends ECAM to terminal.
In said system, the ECAM that supports the digital packet terminal of MEID will come from the base station decodes and obtains unique shared Long Code Mask PLCM field, and the length of this PLCM field can guarantee the uniqueness of this field.Thereby in the Digital Clustering communication, can guarantee uniqueness according to the Long Code Mask of ESN generation, make digital packet terminal support MEID.
Preferably, as shown in Figure 4, above-mentioned digital packet terminal one of comprises with lower device at least: first dispensing device 10, be used for sending call message to the base station, and wherein, call message carries the indication information of supporting MEID; Second dispensing device 12 is used for after receiving the group paging, and to base station transmission group page-response message, wherein, the group page-response message carries the indication information of supporting MEID.
Promptly can whether support MEID by sending this digital packet terminal of call message informing base station, also can whether support MEID by this digital packet terminal of transmission group page-response message informing base station at digital packet terminal.
In specific implementation process, for the situation of terminal caller, first dispensing device 10 carries the indicating bit that this terminal is supported MEID in call message, and this call message is sent to the base station.
For example, the call message field can be referring to table 1.
Table 1
| ????...... | ???...... |
| ??REV_FCH_GATING_REQ | ??1bit |
| ??MEID_Support_indicator | ??1bit |
As shown in Table 1, if this terminal is not supported MEID, the value of MEID Support indicator field is 0; If this terminal is supported MEID, the value of MEID Support indicator field is 1.
In specific implementation process,, when terminal receives after group id (Group Identifier the abbreviates GID as) paging answer group page-response message, carry this terminal of sign and whether support the MEID indicating bit for terminal called situation.
For example, group page-response message field can be referring to table 2.
Table 2
| ??...... | ??...... |
| ??MEID_Support_indicator | ??1bit |
As shown in Table 2, if this terminal is not supported MEID, then the field of MEID Support indicator is 0; If this terminal is supported MEID, then the field of MEID Support indicator is 1.
Preferably, digital packet terminal may further include with lower device: first determines device 14, is used for determining to exist the PLCM identification field according to the length of ECAM, and whether the value representation of this field exists the PLCM field; Second determines device 16, is used for determining to exist the PLCM field according to the value of PLCM identification field; And decoding device 18, be used for ECAM decoded and obtain the PLCM field.
In specific implementation process, the base station judges according to the value of MEID Supportindicator in the terminal call message whether terminal supports that MEID issues ECAM, if then the base station sends ECAM to digital packet terminal, digital packet terminal receives after the ECAM, and ECAM is decoded.
For example, the ECAM field can be referring to table 3.
Table 3
| ??...... | ??...... |
| ??PLCM_TYPE_INCL | ??1bit |
| ??PLCM_TYPE | ??0?or?4bit |
| ??...... | ??...... |
| ??PLCM_32 | ??0?or?32bit |
| ??PLCM_39_INCL | ??0?or?1bit |
| ??PLCM_39 | ??0?or?39bit |
| ??RESERVED | ??0-7bit |
Wherein, the base station can increase field: PLCM_39_INCL (being the PLCM identification field), PLCM_39 (being above-mentioned PLCM field) in ECAM.
In specific implementation process, digital packet terminal receives after the ECAM, mainly comprises following processing:
(1) digital packet terminal has judged whether the PLCM_39_INCL field according to length, if having, and execution in step (2); If do not have, then do not understand this field, jump to (4).
(2) the PLCM_39_INCL field is obtained in decoding, if this field value is 1, carries out (3); If this field value is 0, carry out (4).
(3) the PLCM_39 field is obtained in decoding.
(4) decoding finishes.
Preferably, base station 2 also is used for when current type of call is individual calling, calculates according to user profile and obtains a cover PLCM, and the length of this PLCM field is 39 bits, uses in forward direction and backward channel.
Yet, when terminal uses MEID to stick into row communication, be to generate a pseudo-ESN (can represent) by algorithm in fact, and carry out long code with this puppet ESN and calculate with p_ESN by the MEID number.The PLCM of 39bit can guarantee uniqueness, the promptly different Long Code Mask differences that the user generated.
Preferably, base station 2, also be used for when current type of call is the enhanced group calling, calculate according to group information and obtain a cover PLCM, wherein, the length of this PLCM field is 32 bits, use and is calculated according to user profile and to be obtained another set of PLCM in forward channel, wherein, the length of this PLCM field is 39 bits, uses in backward channel.
In specific implementation process, channel is shared during owing to the digital cluster system group calling, and forward direction uses different Long Code Masks with backward channel, and two cover long codes (being above-mentioned PLCM) must be arranged.For open trunking architecture (Global open Trunking Architechture, abbreviate GoTa as) group system, the enhanced group calling is that forward channel is shared the pattern that backward channel exclusively enjoys, the forward direction long code is based on group information calculating, and 32bit can guarantee the uniqueness of long code; Oppositely long code is based on that user profile calculates, and must use the long code of 39bit could guarantee the uniqueness of Long Code Mask when using MEID as identifying user information.
In addition, when the current type of call of digital cluster system was individual calling, because the channel of individual calling is monopolized, the long code that preceding backward channel uses all is based on user profile and calculates, and was the same with voice under this situation, the same set of long code of preceding reverse use.For MEID user, must use the 39bit long code could guarantee the uniqueness of Long Code Mask.
According to the embodiment of the invention, also provide a kind of digital packet terminal to support the method for MEID.
Fig. 5 is a flow chart of supporting the method for MEID according to the digital packet terminal of the embodiment of the invention.As shown in Figure 5, this method mainly comprises following processing (step S502-step S506):
Step S502: digital packet terminal sends to the base station and carries the message of supporting the MEID indication information;
Step S504: the extended channel assignment messages ECAM that digital packet terminal will come from the base station decodes and obtains unique PLCM field; And
Step S506: digital packet terminal calculates according to the PLCM field and obtains Long Code Mask, and this Long Code Mask is set.
In said method, the ECAM that supports the digital packet terminal of MEID will come from the base station decodes and obtains unique shared Long Code Mask PLCM field, and the length of this PLCM field can guarantee the uniqueness of this field.Thereby in the Digital Clustering communication, can guarantee uniqueness according to the Long Code Mask of ESN generation, make digital packet terminal support MEID.
Preferably, in step S502, digital packet terminal sends by one of following mode and carries the message of whether supporting the MEID indication information:
First kind of mode: digital packet terminal sends call message to the base station, and wherein, call message carries the indication information of supporting MEID; Adopt the implementation process of this mode specifically can be referring to Fig. 6.
Fig. 6 is the flow chart that sends call message according to the terminal of the embodiment of the invention.As shown in Figure 6, this flow process mainly comprises following processing (step S602-step S608):
Step S602: user key-press makes a call, and UI passes to protocol layer with incident;
Step S604: structure call message.
Wherein, in call message, if terminal is supported MEID, the MEID_Support_indicator indicating bit is set to 1, otherwise, be set to 0,
Step S606: this field is packed in the code stream of call message into.
Wherein, above-mentioned call message code stream includes but not limited to binary code stream.
Step S608: terminal sends above-mentioned call message.
The second way: digital packet terminal is after receiving the group paging, and to base station transmission group page-response message, wherein, the group page-response message carries the indication information of supporting MEID.Adopt the implementation process of this mode specifically can be referring to Fig. 7.Fig. 7 is called with the user to be that the page response step is recalled in the example description.
Fig. 7 is the flow chart according to the terminal answer group page response of the embodiment of the invention.As shown in Figure 7, this flow process mainly comprises following processing (step S702-step S708):
Step S702: terminal is at the beep-page message of paging channel receiver address coupling;
Step S704: terminal constructions page-response message;
Wherein,, then whether support that according to terminal MEID is provided with MEID_Support_indicator if above-mentioned beep-page message is the GID beep-page message, if support that then MEID_Support_indicator is set to 1, otherwise, be set to 0,
Step S706: above-mentioned field is packed in the page-response message code stream;
Step S708: terminal transmission group page-response message.
Can get thus, in call message or group page-response message, carry the field of whether supporting MEID, can make the base station determine to support the terminal of MEID, thereby in ECAM, carry unique PLCM field, wherein, the length of this PLCM field can guarantee the uniqueness of this field.
Preferably, above-mentioned steps S504 may further include following processing:
(1) digital packet terminal determines to exist the PLCM identification field according to the length of ECAM;
(2) digital packet terminal determines to exist the PLCM field according to the value of PLCM identification field; And
(3) digital packet terminal is decoded to ECAM and is obtained the PLCM field.
Below in conjunction with Fig. 8 above-mentioned processing procedure is described.
Fig. 8 is the flow chart according to the terminal processes ECAM message of the embodiment of the invention.As shown in Figure 8, this flow process mainly comprises following processing (step S802-step S810):
Step S802: terminal receives ECAM message;
In specific implementation process, system rises according to terminal and exhales or the information of page-response message judges whether terminal supports MEID, issues long code (being ECAM message) to terminal.
Step S804: terminal is decoded after receiving ECAM message, and binary code stream is resolved to each field;
Step S806: terminal is calculated Long Code Mask according to the field that ECAM resolves;
Step S808: terminal is provided with Long Code Mask;
Step S810: terminal receives forward data, oppositely sends previous video frames.
Preferably, when current type of call is individual calling, guarantee that in the following manner the PLCM field is unique: use same set of PLCM in forward direction and the backward channel, wherein, this PLCM is for calculating the long code of obtaining based on user profile, and this long code length is 39 bits.
Preferably, when current type of call is the enhanced group calling, guarantee that in the following manner the PLCM field is unique: use different PLCM in forward direction and the backward channel, wherein, the PLCM that uses in the forward channel is for calculating the long code of obtaining based on group information, this long code length is 32 bits, and the PLCM that uses in the backward channel is for calculating the long code of obtaining based on user profile, and this long code length is 39 bits.
In specific implementation process, step S806 and step S808 mainly comprise following three kinds of processing modes:
(1) if current type of call is an individual calling, if system has issued PLCM_39, then calculate Long Code Mask according to PLCM_39, and be set to forward direction and reverse Long Code Mask (oppositely using with overlapping long code before the individual calling), otherwise, Long Code Mask is set according to original mode (calculating Long Code Mask) according to ESN.
(2) if current type of call is the enhanced group calling, terminal will be calculated the forward direction Long Code Mask according to the PLCM_32 that receives, be set to SRCH; If system has issued PLCM_39, then calculate reverse Long Code Mask according to PLCM_39, be set to backward channel, otherwise, according to original mode (calculating reverse Long Code Mask) reverse Long Code Mask is set according to ESN.
(3) if current type of call is a traditional group call, reverse Long Code Mask before the PLCM_32 that terminal issues according to system calculates and is provided with.
In specific implementation process, in the traditional group call, adopt the prior art processing mode to generate PLCM_32, promptly generate PLCM_32 according to group information.Because this scheme does not generate PLCM_32 according to ESN, thereby the uniqueness of the Long Code Mask that obtains can be guaranteed, thereby the long code collision problem can not be caused.
In sum, by the foregoing description provided by the invention, provide a kind of digital packet terminal to support the scheme of MEID.In digital cluster system, for the channel of monopolizing, long code is based on that user profile calculates, and must use the 39bit long code could guarantee the uniqueness of Long Code Mask.For the channel of sharing, long code is based on that group information calculates, and can use the 32bit long code can guarantee the uniqueness of Long Code Mask.Such scheme has solved and has also lacked a kind of problem that solves the scheme of long code collision in the Digital Clustering communication in the correlation technique, and then can be so that digital packet terminal is supported MEID.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the method for a digital packet terminal support mobile device identification code MEID is characterized in that, may further comprise the steps:
Digital packet terminal sends to the base station and carries the message of supporting the MEID indication information;
The extended channel assignment messages ECAM that described digital packet terminal will come from described base station decodes and obtains unique shared Long Code Mask PLCM field; And
Described digital packet terminal calculates according to described PLCM field and obtains Long Code Mask, and is set to the Long Code Mask of channel.
2. method according to claim 1 is characterized in that, described digital packet terminal sends by following one of at least mode and carries the message of supporting the MEID indication information:
Described digital packet terminal sends call message to described base station, and wherein, described call message carries the indication information of supporting MEID;
Described digital packet terminal is after receiving the group paging, and to described base station transmission group page-response message, wherein, described group of page-response message carries the indication information of supporting MEID.
3. method according to claim 1 is characterized in that, described digital packet terminal is decoded described ECAM and obtained described unique PLCM field and may further comprise the steps:
Described digital packet terminal determines to exist the PLCM identification field according to the length of described ECAM;
Described digital packet terminal determines to exist described PLCM field according to the value of described PLCM identification field; And
Described digital packet terminal is decoded to described ECAM and is obtained described PLCM field.
4. according to each described method in the claim 1 to 3, it is characterized in that, when current type of call is individual calling, guarantee that in the following manner the PLCM field is unique: use same set of PLCM in forward direction and the backward channel, wherein, this PLCM is for calculating the long code of obtaining based on user profile, and this long code length is 39 bits.
5. according to each described method in the claim 1 to 3, it is characterized in that, when current type of call is the enhanced group calling, guarantee that in the following manner the PLCM field is unique: use different PLCM in forward direction and the backward channel, wherein, the PLCM that uses in the forward channel is for calculating the long code of obtaining based on group information, and this long code length is 32 bits, the PLCM that uses in the backward channel is for calculating the long code of obtaining based on user profile, and this long code length is 39 bits.
6. the system of a digital packet terminal support mobile device identification code MEID is characterized in that, comprises with lower device:
Digital packet terminal, be used for sending the message that carries support MEID indication information to the base station, the extended channel assignment messages ECAM that will come from described base station decodes and obtains unique shared Long Code Mask PLCM field, and calculates the Long Code Mask that obtains Long Code Mask and be set to channel according to described PLCM field; And
Described base station is used to receive the message of supporting the MEID indication information that carries that comes from described terminal, sends described ECAM to described terminal.
7. system according to claim 6 is characterized in that, described digital packet terminal one of comprises with lower device at least:
First dispensing device is used for sending call message to described base station, and wherein, described call message carries the indication information of supporting MEID;
Second dispensing device is used for after receiving the group paging, and to described base station transmission group page-response message, wherein, described group of page-response message carries the indication information of supporting MEID.
8. system according to claim 6 is characterized in that, described digital packet terminal comprises with lower device:
First determines device, is used for determining to exist the PLCM identification field according to the length of described ECAM;
Second determines device, is used for determining to exist described PLCM field according to the value of described PLCM identification field; And
Decoding device is used for described ECAM decoded and obtains described PLCM field.
9. according to each described system in the claim 6 to 8, it is characterized in that described base station, also be used for when current type of call is individual calling, a cover PLCM is obtained in calculating according to user profile, and the length of this PLCM field is 39 bits, uses in forward direction and backward channel.
10. according to each described system in the claim 6 to 8, it is characterized in that described base station also is used for when current type of call is the enhanced group calling, a cover PLCM is obtained in calculating according to group information, wherein, the length of this PLCM field is 32 bits, uses in forward channel, and calculate according to user profile and to obtain another set of PLCM, wherein, the length of this PLCM field is 39 bits, uses in backward channel.
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