CN105577844B - Generate method, equipment of the core network and the terminal of multicast user face address - Google Patents
Generate method, equipment of the core network and the terminal of multicast user face address Download PDFInfo
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Abstract
The present invention provides the method, equipment of the core network and the terminals that generate multicast user face address, this method comprises: terminal of the equipment of the core network into multicast group sends multicast user face address information；Terminal receives multicast user face address information；The group number of terminal multicast group according to the pre-stored data determines the value of the conversion address field of the group number in the address of multicast user face；Terminal generates multicast user face address according to the value of multicast user face address information and group number conversion address field；Multicast user face address includes: complete 1 field, Flags field, Scope field, address generation type field, group's address field, group number conversion address field, filling field；Multicast user face address information includes: value, the value of Flags field, the value of Scope field, value, the value of group's address field of address generation type field of complete 1 field.The scheme provided through the invention can reduce the time required for transport multicast user surface address information.
Description
Technical field
The present invention relates to fields of communication technology more particularly to a kind of method, core net for generating multicast user face address to set
Standby and terminal.
Background technique
When trunking communication system realizing group-calling service, in order to guarantee quick response, generally require wireless terminal can be in nothing
Reception group is exhaled in the state of connection.In order to reduce the time that group exhales foundation, the signaling of control plane is needed to simplify as far as possible, also, industry
The user face address of business generally uses IP multicast address, avoids introducing the paging to terminal using unicast address, influences to exhale
Cry settling time.
In group system, multicast user face address is distributed by cluster core net, and is sent out in call setup by signaling
Send the terminal in multicast user face address information notice multicast group.The multicast user that terminal in multicast group is sent according to core net
Face address information determines the multicast user face address of the terminal in multicast group.
In the prior art, the address IPv6 used in group system is as follows:
One kind is IPv6 multicast address structure defined in 4291 agreement of RFC, as shown in table 1.
Table 1
First character section in IPv6 multicast address structure shown in table 1 is complete " 1 ".Flags (label) field of 4bit
Structure be " 0RPT ": highest order is reserved as 0；R take the group of the non-embedded RP (convergent point, Rendezvous Point) of 0 expression
Address is broadcast, 1 multicast address for indicating embedded RP is taken；The P multicast address for taking 0 expression to be not based on unicast prefix take 1 expression base
In the multicast address of unicast prefix；T take 0 expression permanent allocation multicast address, with taking 1 multicast for indicating impermanent distribution
Location.Scope (range) field of 4bit is used to limit the range of multicast address, defines only 6 values at present, remaining value is protected
It stays, this 6 values are respectively as follows: 1 expression interface local scope；2 indicate link local scope；4 indicate management local scope；5 tables
Show site local scope；8 indicate tissue local scope；E indicates global range.Group id field grows 112 bit, is used for table
Show specific multicast group.
Another kind is the IPv6 multicast address structure based on unicast prefix defined in 3306 agreement of RFC, as shown in table 2.
Table 2
In IPv6 multicast address structure shown in table 2 definition of preceding 16 bit with table 1, preceding 16 bit are identical, to surplus
Remaining 112bit is such as given a definition:
The reserved bit of 8bit is set；The Plen field of 8bit is set, indicates the effective length of network prefix；64bit is set
Network prefix field, indicate specific unicast prefix；Group id field grows 32 bit, for indicating specific
Multicast group.
Existing network is not yet transitioned into the IPv6 stage completely, and the scene that IPv4 and IPv6 coexist is also very universal, therefore has
The address conversion and translation technology of IPv4 to IPv6, for IPv4 multicast address and IPv6 multicast address conversion specific method such as
Under: fixed address prefix is defined, using the address IPv4 as last 32 of the address IPv6, by " Fixed CP+IPv4
The mode of location " is realized.
As can be seen from the above description, core net is needed when sending multicast user face address information to terminal in the prior art
128 bit in the address of multicast user face are all sent to terminal, the data content of air interface transmission is more, needs to disappear
Consume more time.
Summary of the invention
The present invention provides a kind of method, equipment of the core network and terminals for generating multicast user face address, can reduce biography
Time required for the address information of defeated multicast user face.
In a first aspect, the present invention provides a kind of methods for generating multicast user face address, comprising:
Terminal of the equipment of the core network into multicast group sends multicast user face address information；
Terminal in the multicast group receives multicast user face address information；
The group number of terminal multicast group according to the pre-stored data in the multicast group determines in the address of multicast user face
Group number conversion address field value；
Terminal in the multicast group converts address field according to multicast user face address information and the group number
Value generates multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class
Type-word section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second
Bit is 0 multicast address for indicating non-embedded convergent point RP, and second bit is 1 multicast address for indicating embedded RP；Third
A bit is the multicast address that 0 expression is not based on unicast prefix, and third bit is for 1 multicast of the expression based on unicast prefix
Location；4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein institute
The value for stating Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes,
The value of the Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression website local models
It encloses, the value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
Wherein, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field and is used for
Represent group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
The number of bits of number of bits, group number conversion address field occupancy that group's address field occupies fills word
The sum of number of bits of Duan Zhanyong is 108, wherein number of bits, the group number of group's address field occupancy convert address word
The number of bits that number of bits, the filling field of Duan Zhanyong occupy is pre-set；
Multicast user face address information includes: the value of complete 1 field, the value of Flags field, Scope field
Value, address generate value, the value of group's address field of type field.
Further, the terminal in the multicast group is according to multicast user face address information and group number conversion ground
The value of location field determines multicast user face address, comprising:
Terminal in the multicast group determines group's address field, group number according to the value that the address generates type field
The value for putting in order and filling field converted address field, fill field.
Further, the terminal in the multicast group determines group address according to the value that the address generates type field
Field, group number conversion address field, the value for putting in order and filling field for filling field, comprising:
When the filling type bit that the address generates type field is 1, described in the terminal determination in the multicast group
Filling field is all 1, and when the filling type bit that the address generates type field is 0, the terminal in the multicast group is true
The fixed filling field is all 0, wherein the address generates the filling type bit in type field for representing filling field
Value, the other three bit is used to represent group address field, group number conversion address field, filling field and puts in order.
Further, before the terminal in the equipment of the core network into multicast group sends multicast user face address information,
Further include:
The group number of group where the equipment of the core network obtains the multicast group；
The equipment of the core network generates taking for group's address field according to the group number of group where the multicast group
Value；
The equipment of the core network generates multicast user face address information according to the value of group's address field.
Second aspect, the present invention provides a kind of equipments of the core network, comprising:
Transmission unit sends multicast user face address information for the terminal into multicast group, so that in the multicast group
Terminal receive multicast user face address information, according to multicast user face address information and pre-stored multicast group
Group number determine multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class
Type-word section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second
Bit is 0 multicast address for indicating non-embedded convergent point RP, and second bit is 1 multicast address for indicating embedded RP；Third
A bit is the multicast address that 0 expression is not based on unicast prefix, and third bit is for 1 multicast of the expression based on unicast prefix
Location；4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein institute
The value for stating Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes,
The value of the Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression website local models
It encloses, the value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
Wherein, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field and is used for
Represent group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
The number of bits of number of bits, group number conversion address field occupancy that group's address field occupies fills word
The sum of number of bits of Duan Zhanyong is 108, wherein number of bits, the group number of group's address field occupancy convert address word
The number of bits that number of bits, the filling field of Duan Zhanyong occupy is pre-set；
Multicast user face address information includes: the value of complete 1 field, the value of Flags field, Scope field
Value, address generate value, the value of group's address field of type field.
Further, further includes:
Acquiring unit, the group number for group where obtaining the multicast group；
First generation unit, for generating group's address field according to the group number of group where the multicast group
Value；
Second generation unit, for generating multicast user face address letter according to the value of group's address field
Breath.
The third aspect, the present invention provides a kind of terminals, comprising:
Receiving unit, for receiving multicast user face address information；
Determination unit, the group number for multicast group according to the pre-stored data determine the group number in the address of multicast user face
Convert the value of address field；
Scalar/vector, for converting taking for address field according to multicast user face address information and the group number
Value generates multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class
Type-word section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second
Bit is 0 multicast address for indicating non-embedded convergent point RP, and second bit is 1 multicast address for indicating embedded RP；Third
A bit is the multicast address that 0 expression is not based on unicast prefix, and third bit is for 1 multicast of the expression based on unicast prefix
Location；4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein institute
The value for stating Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes,
The value of the Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression website local models
It encloses, the value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
Wherein, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field and is used for
Represent group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
The number of bits of number of bits, group number conversion address field occupancy that group's address field occupies fills word
The sum of number of bits of Duan Zhanyong is 108, wherein number of bits, the group number of group's address field occupancy convert address word
The number of bits that number of bits, the filling field of Duan Zhanyong occupy is pre-set；
Multicast user face address information includes: the value of complete 1 field, the value of Flags field, Scope field
Value, address generate value, the value of group's address field of type field.
Further, the scalar/vector, the value specifically for generating type field according to the address determine
Group's address field, group number conversion address field, the value for putting in order and filling field for filling field.
Further, the scalar/vector, specifically for generating the filling type ratio of type field when the address
It when specially for 1, determines that the filling field is all 1, when the filling type bit that the address generates type field is 0, determines
The filling field is all 0, wherein the address generates the filling type bit in type field and is used to represent filling field
Value, the other three bit are used to represent group's address field, group number conversion address field, fill putting in order for field.
Method, equipment of the core network and the terminal of a kind of generation multicast user face address provided through the invention, can subtract
Time required for few transport multicast user surface address information.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of flow chart of the method for generation multicast user face address that one embodiment of the invention provides；
Fig. 2 is a kind of equipment of the core network that one embodiment of the invention provides；
Fig. 3 is a kind of terminal that one embodiment of the invention provides.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of methods for generating multicast user face address, referring to Fig. 1, this method comprises:
Step 101: terminal of the equipment of the core network into multicast group sends multicast user face address information；
Step 102: the terminal in the multicast group receives multicast user face address information；
Step 103: the group number of the terminal multicast group according to the pre-stored data in the multicast group determines multicast user
The value of group number conversion address field in the address of face；
Step 104: the terminal in the multicast group is according to multicast user face address information and group number conversion ground
The value of location field generates multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class
Type-word section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second
Bit is 0 multicast address for indicating non-embedded convergent point RP, and second bit is 1 multicast address for indicating embedded RP；Third
A bit is the multicast address that 0 expression is not based on unicast prefix, and third bit is for 1 multicast of the expression based on unicast prefix
Location；4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein institute
The value for stating Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes,
The value of the Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression website local models
It encloses, the value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
Wherein, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field and is used for
Represent group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
The number of bits of number of bits, group number conversion address field occupancy that group's address field occupies fills word
The sum of number of bits of Duan Zhanyong is 108, wherein number of bits, the group number of group's address field occupancy convert address word
The number of bits that number of bits, the filling field of Duan Zhanyong occupy is pre-set；
Multicast user face address information includes: the value of complete 1 field, the value of Flags field, Scope field
Value, address generate value, the value of group's address field of type field.
In a kind of method generating multicast user face address provided by the above embodiment, equipment of the core network only needs partaof
The information of user face address does not need whole multicast user face addresses being sent to terminal, in the terminal in multicast group in advance
The group number of multicast group is stored, multicast user face address can be locally generated, reduce the data of air interface transmission
Content reduces the time required for transport multicast user surface address information.
Table 3 shows a kind of multicast user face address structure provided in an embodiment of the present invention:
Table 3
For example, group's address field is indicated with a, and group number conversion address field is indicated with b, fills field c table
Show, referring to table 4a, a kind of value and group's address field, group number conversion ground of address generation type field provided in this embodiment
Location field, the relationship to put in order for filling field, referring to table 4b, a kind of address provided by the embodiment generates type field and fills out
Fill the relationship of the value of field.
Table 4a
Table 4b
In one possible implementation, the step 104 includes:
Terminal in the multicast group determines group's address field, group number according to the value that the address generates type field
The value for putting in order and filling field converted address field, fill field.
Specifically, when the filling type bit that the address generates type field is 1, the terminal in the multicast group is true
The fixed filling field is all 1, when the filling type bit that the address generates type field is 0, in the multicast group
Terminal determines that the filling field is all 0, wherein the address generates the filling type bit in type field for representing
The value of field is filled, the other three bit is used to represent group's address field, group number conversion address field, the row for filling field
Column sequence.Filling bit be it is pre-set, can be address generate type field 4 bits in any one.
Wherein, complete 1 field, Flags field, Scope field of multicast user face address, address generate type field, collection
Group's address field is directly according to the value of complete 1 field in the address information of multicast user face, the value of Flags field, Scope word
The value of section, address generate the value of type field, the value of group's address field to fill.
In one possible implementation, before step 101, include the steps that 1001, step is not shown in the figure
1002, step 1003:
Step 1001: the group number of group where the equipment of the core network obtains the multicast group；
Step 1002: the equipment of the core network generates the group address according to the group number of group where the multicast group
The value of field；
Step 1003: the equipment of the core network is according to the value of the group's address field generation multicast user face
Location information.
It should be understood that the value of above-mentioned group's address field be multicast group where group group number be converted into ten
Senary number, high-order zero padding.Group number converts the hexadecimal number that the value of address field is converted into the group number of multicast group,
High-order zero padding.
In one possible implementation, the embodiment of the invention provides a kind of sides for generating multicast user face address
Method includes the steps that S1, S2, S3, S4 is not shown:
Step S1: terminal of the equipment of the core network into multicast group sends call setup request message, wherein the call setup
Carry multicast user face address information in vertical request message, multicast user face address information include: complete 1 field value be FF,
The value of Flags field is 1, the value of Scope field is 8, the value of address generation type field is 1, group's address field
Value be 34F, wherein the value of group's address field can pass through equipment of the core network obtain metric group number 0847
It is converted to；
Step S2: the terminal in the multicast group receives multicast user face address information；
Step S3: the group number of the terminal multicast group according to the pre-stored data in the multicast group determines multicast user face
The value of group number conversion address field in address, wherein the group number of pre-stored multicast group is decimal number
123456789012345, decimal number 123456789012345 is converted into hexadecimal number 7048860DDF79 and obtains group number
Convert the value of address field；
Step S4: the terminal in the multicast group converts address according to multicast user face address information and the group number
The value of field generates multicast user face address, and the multicast user face address is as shown in table 5；
Table 5
Numerical value in table 5 is hexadecimal number.
By table 5 it is found that the value of complete 1 field is FF；The value of Flags field is 1, indicates an impermanent distribution
, the multicast address of embedded RP that be not based on unicast prefix, non-；The value of Scope field is 8, indicates tissue local scope；Ground
The value that location generates type field is 1, based on table 4a and table 4b it is found that putting in order as group's address field, group number conversion ground
Location field, filling field, and filling field value is full 0；The value of group's address field is 34F；Group number converts address field
Value be 00007048860DDF79；The value for filling field is 00000000.Multicast user face address can be expressed as
FF18:134F:0:7048:860D:DF79:0:0。
In the above-described embodiments, equipment of the core network need to only send the multicast user face of preceding 32 bit to the terminal in multicast group
The data content of address information, air interface transmission is less, and the time required for transport multicast user surface address information is less.
The embodiment of the invention also provides a kind of equipments of the core network, referring to fig. 2, comprising:
Transmission unit 201 sends multicast user face address information for the terminal into multicast group, so that the multicast group
In terminal receive multicast user face address information, according to multicast user face address information and pre-stored multicast
The group number of group determines multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class
Type-word section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second
Bit is 0 multicast address for indicating non-embedded convergent point RP, and second bit is 1 multicast address for indicating embedded RP；Third
A bit is the multicast address that 0 expression is not based on unicast prefix, and third bit is for 1 multicast of the expression based on unicast prefix
Location；4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein institute
The value for stating Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes,
The value of the Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression website local models
It encloses, the value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
Wherein, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field and is used for
Represent group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
The number of bits of number of bits, group number conversion address field occupancy that group's address field occupies fills word
The sum of number of bits of Duan Zhanyong is 108, wherein number of bits, the group number of group's address field occupancy convert address word
The number of bits that number of bits, the filling field of Duan Zhanyong occupy is pre-set；
Multicast user face address information includes: the value of complete 1 field, the value of Flags field, Scope field
Value, address generate value, the value of group's address field of type field.
The equipment of the core network of above-described embodiment, further includes:
Acquiring unit, the group number for group where obtaining the multicast group；
First generation unit, for generating group's address field according to the group number of group where the multicast group
Value；
Second generation unit, for generating multicast user face address letter according to the value of group's address field
Breath.
The embodiment of the invention provides a kind of terminals, and referring to Fig. 3, which includes:
Receiving unit 301, for receiving multicast user face address information；
Determination unit 302, the group number for multicast group according to the pre-stored data determine in the address of multicast user face
The value of group number conversion address field；
Scalar/vector 303, for converting address field according to multicast user face address information and the group number
Value generate multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class
Type-word section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second
Bit is 0 multicast address for indicating non-embedded convergent point RP, and second bit is 1 multicast address for indicating embedded RP；Third
A bit is the multicast address that 0 expression is not based on unicast prefix, and third bit is for 1 multicast of the expression based on unicast prefix
Location；4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein institute
The value for stating Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes,
The value of the Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression website local models
It encloses, the value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
Wherein, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field and is used for
Represent group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
The number of bits of number of bits, group number conversion address field occupancy that group's address field occupies fills word
The sum of number of bits of Duan Zhanyong is 108, wherein number of bits, the group number of group's address field occupancy convert address word
The number of bits that number of bits, the filling field of Duan Zhanyong occupy is pre-set；
Multicast user face address information includes: the value of complete 1 field, the value of Flags field, Scope field
Value, address generate value, the value of group's address field of type field.
In one possible implementation, the scalar/vector is specifically used for generating type according to the address
The value of field determines that group's address field, group number conversion address field, filling field put in order and fill field
Value.
Specifically, the scalar/vector, specifically for generating the filling type bit of type field when the address
It when being 1, determines that the filling field is all 1, when the filling type bit that the address generates type field is 0, determines institute
It states filling field and is all 0, wherein the address generates the filling type bit in type field and is used to represent taking for filling field
Value, the other three bit are used to represent group's address field, group number conversion address field, fill putting in order for field.
The contents such as the information exchange between each unit, sub-unit, implementation procedure in above equipment, due to side of the present invention
Method embodiment is based on same design, and for details, please refer to the description in the embodiment of the method for the present invention, and details are not described herein again.
It should be noted that, in this document, such as first and second etc relational terms are used merely to an entity
Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation
Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment for including a series of elements not only includes those elements,
It but also including other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence " including one ", is not arranged
Except there is also other identical factors in the process, method, article or apparatus that includes the element.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can store in computer-readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
In the various media that can store program code such as disk.
Finally, it should be noted that the foregoing is merely presently preferred embodiments of the present invention, it is merely to illustrate skill of the invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (9)
1. a kind of method for generating multicast user face address characterized by comprising
Terminal of the equipment of the core network into multicast group sends multicast user face address information；
Terminal in the multicast group receives multicast user face address information；
The group number of terminal multicast group according to the pre-stored data in the multicast group determines the group in the address of multicast user face
Number conversion address field value；
Terminal in the multicast group converts the value of address field according to multicast user face address information and the group number
Generate multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class type-word
Section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second bit
The multicast address for indicating non-embedded convergent point RP for 0, second bit are 1 multicast address for indicating embedded RP；Third ratio
Indicate that the multicast address for being not based on unicast prefix, third bit are 1 multicast address of the expression based on unicast prefix specially for 0；The
Four bits are 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein described
The value of Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes, institute
The value for stating Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression site local scopes,
The value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
In, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field for representing
Group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
Number of bits, the filling field of number of bits, group number conversion address field occupancy that group's address field occupies account for
The sum of number of bits is 108, wherein number of bits, the group number conversion address field of group's address field occupancy account for
The number of bits that number of bits, filling field occupy is pre-set；
Multicast user face address information include: the value of complete 1 field, the value of Flags field, the value of Scope field,
Value, the value of group's address field of address generation type field.
2. the method according to claim 1, wherein the terminal in the multicast group is according to the multicast user face
The value of address information and group number conversion address field determines multicast user face address, comprising:
Terminal in the multicast group determines that group's address field, group number are converted according to the value that the address generates type field
Address field, the value for putting in order and filling field for filling field.
3. according to the method described in claim 2, it is characterized in that, the terminal in the multicast group generates class according to the address
The value of type-word section determines that group's address field, group number conversion address field, filling field put in order and fill field
Value, comprising:
When the filling type bit that the address generates type field is 1, the terminal in the multicast group determines the filling
Field is all 1, and when the filling type bit that the address generates type field is 0, the terminal in the multicast group determines institute
It states filling field and is all 0, wherein the address generates the filling type bit in type field and is used to represent taking for filling field
Value, the other three bit are used to represent group's address field, group number conversion address field, fill putting in order for field.
4. the method according to claim 1, wherein being sent in terminal of the equipment of the core network into multicast group
Before the address information of multicast user face, further includes:
The group number of group where the equipment of the core network obtains the multicast group；
The equipment of the core network generates the value of group's address field according to the group number of group where the multicast group；
The equipment of the core network generates multicast user face address information according to the value of group's address field.
5. a kind of equipment of the core network characterized by comprising
Transmission unit sends multicast user face address information for the terminal into multicast group, so that the end in the multicast group
End receives multicast user face address information, according to multicast user face address information and by pre-stored multicast group
The value of group number conversion address field in the multicast user face address that group number determines, with generating the multicast user face
Location；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class type-word
Section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second bit
The multicast address for indicating non-embedded convergent point RP for 0, second bit are 1 multicast address for indicating embedded RP；Third ratio
Indicate that the multicast address for being not based on unicast prefix, third bit are 1 multicast address of the expression based on unicast prefix specially for 0；The
Four bits are 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein described
The value of Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes, institute
The value for stating Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression site local scopes,
The value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
In, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field for representing
Group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
Number of bits, the filling field of number of bits, group number conversion address field occupancy that group's address field occupies account for
The sum of number of bits is 108, wherein number of bits, the group number conversion address field of group's address field occupancy account for
The number of bits that number of bits, filling field occupy is pre-set；
Multicast user face address information include: the value of complete 1 field, the value of Flags field, the value of Scope field,
Value, the value of group's address field of address generation type field.
6. equipment of the core network according to claim 5, which is characterized in that further include:
Acquiring unit, the group number for group where obtaining the multicast group；
First generation unit, for generating taking for group's address field according to the group number of group where the multicast group
Value；
Second generation unit, for generating multicast user face address information according to the value of group's address field.
7. a kind of terminal characterized by comprising
Receiving unit, for receiving multicast user face address information；
Determination unit, the group number for multicast group according to the pre-stored data determine that the group number in the address of multicast user face is converted
The value of address field；
Scalar/vector, it is raw for the value according to multicast user face address information and group number conversion address field
At multicast user face address；
Multicast user face address includes: complete 1 field, flag F lags field, range Scope field, address generation class type-word
Section, group's address field, group number conversion address field, filling field；
Wherein, complete 1 field occupies first character section, value all 1；
The Flags field occupies preceding 4 bits of second byte, wherein first bit value is 0；Second bit
The multicast address for indicating non-embedded convergent point RP for 0, second bit are 1 multicast address for indicating embedded RP；Third ratio
Indicate that the multicast address for being not based on unicast prefix, third bit are 1 multicast address of the expression based on unicast prefix specially for 0；The
Four bits are 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address for indicating impermanent distribution；
The Scope field occupies rear 4 bits of second byte, for representing the range of multicast address, wherein described
The value of Scope field is 1 expression interface local scope, and the value of the Scope field is 2 expression link local scopes, institute
The value for stating Scope field is that 4 expressions manage local scope, and the value of the Scope field is 5 expression site local scopes,
The value of the Scope field is 8 expression tissue local scopes, and the value of the Scope field is that E indicates global range,
In, the value of the Scope field is hexadecimal values；
The address generates preceding 4 bits that type field is third byte, and the address generates type field for representing
Group's address field, group number conversion address field, the value for putting in order and filling field for filling field；
The group number of group where group's address field is used to represent multicast group；
The group number conversion address field is used to represent the group number of multicast group；
Number of bits, the filling field of number of bits, group number conversion address field occupancy that group's address field occupies account for
The sum of number of bits is 108, wherein number of bits, the group number conversion address field of group's address field occupancy account for
The number of bits that number of bits, filling field occupy is pre-set；
Multicast user face address information include: the value of complete 1 field, the value of Flags field, the value of Scope field,
Value, the value of group's address field of address generation type field.
8. terminal according to claim 7, which is characterized in that the scalar/vector is specifically used for according to describedly
Location generate type field value determine group's address field, group number conversion address field, filling field put in order and
Fill the value of field.
9. terminal according to claim 8, which is characterized in that the scalar/vector is specifically used for working as the address
When the filling type bit for generating type field is 1, determine that the filling field is all 1, when the address generates type field
Filling type bit when being 0, determine that the filling field is all 0, wherein the filling class in address generation type field
Type bit is used to represent the value of filling field, and the other three bit is used to represent group's address field, group number conversion address word
Section fills putting in order for field.
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| CN1276663A (en) * | 2000-07-20 | 2000-12-13 | 上海龙林通讯技术开发有限公司 | Multicast method for broad-band Ethermet |
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| US7602781B2 (en) * | 2002-05-07 | 2009-10-13 | Cisco Technology, Inc. | System and method for deriving IPv6 scope indentifiers and for mapping the identifiers into IPv6 addresses |
| CN101557349A (en) * | 2009-05-26 | 2009-10-14 | 孙斌 | Method and system for processing Internet data message |
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