CN105577844A - Method for generating multicast user plane address, core network device and terminal - Google Patents
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Abstract
The present invention provides a method for generating a multicast user plane address, a core network device and a terminal. The method includes the following steps that: a core network device sends multicast user plane address information to a terminal in a multicast group; the terminal receives the multicast user plane address information; the terminal determines the value of a group number conversion address field in a multicast user plane address according to the pre-stored serial number of the multicast group; the terminal generates the multicast user plane address according to the multicast user plane address information and the value of the group number conversion address field, wherein the multicast user plane address contains a total-1 field, a Flags field, a Scope field, an address generation type field, a bloc address field, a group number conversion address field and a filling field, and the multicast user plane address information contains the value of the total-1 field, the value of the Flags field, the value of the Scope field, the value of the address generation type field, and the value of the bloc address field. With the method provided by the technical schemes of the invention adopted, time required by transmitting the multicast user plane address information can be decreased.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method, equipment of the core network and the terminal that generate address, multicast user face.
Background technology
During trunking communication system realizing group-calling service, in order to ensure quick response, General Requirements wireless terminal can receive group calling under connectionless state.In order to reduce the time that group calling is set up, need the signaling of chain of command to simplify, and the address, user face of business generally adopting IP multicast address as far as possible, avoiding using the paging of unicast address introducing to terminal, affecting call set-up time.
In group system, address, multicast user face is distributed by cluster core net, and sends the terminal in the address information notice multicast group of multicast user face when call setup by signaling.The address, multicast user face of the terminal in the multicast user face address information determination multicast group that the terminal in multicast group is sent according to core net.
In prior art, the IPv6 address used in group system is as follows:
For the IPv6 multicast address structure defined in RFC4291 agreement, as shown in table 1.
Table 1
First character joint in IPv6 multicast address structure shown in table 1 is complete " 1 ".The structure of Flags (mark) field of 4bit is " 0RPT ": highest order is reserved as 0; R gets position the multicast address of the non-embedded RP of 0 expression (convergent point, RendezvousPoint), gets the multicast address that 1 represents embedded RP; P gets position the non-multicast address based on clean culture prefix of 0 expression, gets the multicast address of 1 expression based on clean culture prefix; T gets position 0 expression permanent allocation multicast address, gets the multicast address that 1 represents impermanent distribution.Scope (scope) field of 4bit, for limiting the scope of multicast address, define only 6 values at present, and all the other values retain, and these 6 values are respectively: 1 represents interface local scope; 2 represent link local scope; 4 represent management local scope; 5 represent site local scope; Local scope is organized in 8 expressions; E represents global range.Long 112 bit of group id field, for representing concrete multicast group.
The another kind of IPv6 multicast address structure based on clean culture prefix for defining in RFC3306 agreement, as shown in table 2.
Table 2
In IPv6 multicast address structure shown in table 2, the definition of front 16 bit is identical with table 1, front 16 bit, carries out as given a definition to remaining 112bit:
The reservation position of 8bit is set; The Plen field of 8bit is set, represents the effective length of network prefix; The Networkprefix field of 64bit is set, represents concrete clean culture prefix; Long 32 bit of group id field, for representing concrete multicast group.
Existing network is transitioned into the IPv6 stage not yet completely, the scene that IPv4 and IPv6 coexists is also very general, therefore address transition and the translation technology of IPv4 to IPv6 is had, conversion concrete grammar for IPv4 multicast address and IPv6 multicast address is as follows: define fixing address prefix, using as IPv6 address last 32 of IPv4 address, realized by the mode of " Fixed CP+IPv4 address ".
Visible by foregoing description, in prior art, core net needs 128 bit in address, multicast user face all to send to terminal when sending multicast user face address information to terminal, and the data content of air interface transmission is more, needs to consume the more time.
Summary of the invention
The invention provides a kind of method, equipment of the core network and the terminal that generate address, multicast user face, the time required for transport multicast user surface address information can be reduced.
First aspect, the invention provides a kind of method generating address, multicast user face, comprising:
Equipment of the core network sends multicast user face address information to the terminal in multicast group;
Terminal in described multicast group receives described multicast user face address information;
Terminal in described multicast group determines the value of the group number reference address field in address, multicast user face according to the group number of the multicast group prestored;
Terminal in described multicast group generates address, described multicast user face according to the value of described multicast user face address information and described group number reference address field;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
Further, the terminal in described multicast group determines address, described multicast user face according to the value of described multicast user face address information and described group number reference address field, comprising:
The value that terminal in described multicast group generates type field according to described address is determined group's address field, group number reference address field, is filled putting in order and filling the value of field of field.
Further, the value that the terminal in described multicast group generates type field according to described address is determined group's address field, group number reference address field, is filled putting in order and filling the value of field of field, comprising:
When the filling type bit that described address generates type field is 1, terminal in described multicast group determines that described filling field is 1 entirely, when the filling type bit that described address generates type field is 0, terminal in described multicast group determines that described filling field is 0 entirely, wherein, filling type bit in described address generation type field is for representing the value of filling field, and other three bits are used for representing group's address field, group number reference address field, filling putting in order of field.
Further, before described equipment of the core network sends multicast user face address information to the terminal in multicast group, also comprise:
Described equipment of the core network obtains the group number of described multicast group place group;
Described equipment of the core network generates the value of described group address field according to the group of described multicast group place group number;
Described equipment of the core network generates described multicast user face address information according to the value of described group address field.
Second aspect, the invention provides a kind of equipment of the core network, comprising:
Transmitting element, for sending multicast user face address information to the terminal in multicast group, to make the terminal in described multicast group receive described multicast user face address information, determine address, multicast user face according to described multicast user face address information and the group number of the multicast group prestored;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
Further, also comprise:
Acquiring unit, for obtaining the group number of described multicast group place group;
First generation unit, for generating the value of described group address field according to the group number of described multicast group place group;
Second generation unit, for generating described multicast user face address information according to the value of described group address field.
The third aspect, the invention provides a kind of terminal, comprising:
Receiving element, for receiving group user surface address information;
Determining unit, for determining the value of the group number reference address field in address, multicast user face according to the group number of the multicast group prestored;
Scalar/vector, for generating address, described multicast user face according to the value of described multicast user face address information and described group number reference address field;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
Further, described scalar/vector, determines group's address field, group number reference address field specifically for the value generating type field according to described address, fills putting in order and filling the value of field of field.
Further, described scalar/vector, specifically for when the filling type bit that described address generates type field is 1, determine that described filling field is 1 entirely, when the filling type bit that described address generates type field is 0, determine that described filling field is 0 entirely, wherein, filling type bit in described address generation type field is for representing the value of filling field, and other three bits are used for representing group's address field, group number reference address field, filling putting in order of field.
By a kind of method, equipment of the core network and terminal generating address, multicast user face provided by the invention, the time required for transport multicast user surface address information can be reduced.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart generating the method for address, multicast user face 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.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly; below in conjunction with the accompanying drawing in the embodiment of the present invention; technical scheme in the embodiment of the present invention is clearly and completely described; obviously; described embodiment is the present invention's part embodiment, instead of whole embodiments, based on the embodiment in the present invention; the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
Embodiments provide a kind of method generating address, multicast user face, see Fig. 1, the method comprises:
Step 101: equipment of the core network sends multicast user face address information to the terminal in multicast group;
Step 102: the terminal in described multicast group receives described multicast user face address information;
Step 103: the terminal in described multicast group determines the value of the group number reference address field in address, multicast user face according to the group number of the multicast group prestored;
Step 104: the terminal in described multicast group generates address, described multicast user face according to the value of described multicast user face address information and described group number reference address field;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
What above-described embodiment provided a kind ofly generates in the method for address, multicast user face, equipment of the core network only needs the information of address, partaof user face, whole addresses, multicast user face is not needed to send to terminal, the group number of multicast group has been prestored in terminal in multicast group, address, multicast user face can be generated in this locality, decrease the data content of air interface transmission, decrease the time required for transport multicast user surface address information.
Table 3 shows a kind of multicast user face address structure that the embodiment of the present invention provides:
Table 3
For example, group's address field a represents, group number reference address field b represents, fill field c to represent, see table 4a, the value that a kind of address that the present embodiment provides generates type field and group's address field, group number reference address field, fills the relation put in order of field, see table 4b, the relation of the value of a kind of address generation type field that this enforcements provides and filling field.
Table 4a
Table 4b
In a kind of possible implementation, described step 104 comprises:
The value that terminal in described multicast group generates type field according to described address is determined group's address field, group number reference address field, is filled putting in order and filling the value of field of field.
Particularly, when the filling type bit that described address generates type field is 1, terminal in described multicast group determines that described filling field is 1 entirely, when the filling type bit that described address generates type field is 0, terminal in described multicast group determines that described filling field is 0 entirely, wherein, filling type bit in described address generation type field is for representing the value of filling field, and other three bits are used for representing group's address field, group number reference address field, filling putting in order of field.Filling bit is pre-set, can be any one in 4 bits of address generation type field.
Wherein, complete 1 field of address, multicast user face, Flags field, Scope field, address generate that type field, group's address field directly generate the value of type field according to the value of complete 1 field in the address information of multicast user face, the value of Flags field, the value of Scope field, address, the value of group's address field is filled.
In a kind of possible implementation, before step 101, also comprise not shown step 1001, step 1002, step 1003:
Step 1001: described equipment of the core network obtains the group number of described multicast group place group;
Step 1002: described equipment of the core network generates the value of described group address field according to the group of described multicast group place group number;
Step 1003: described equipment of the core network generates described multicast user face address information according to the value of described group address field.
It should be noted that: the value of above-mentioned group address field is the hexadecimal number that the group number of multicast group place group converts to, high-order zero padding.The value of group number reference address field is the hexadecimal number that the group number of multicast group converts to, high-order zero padding.
In a kind of possible implementation, embodiments provide a kind of method generating address, multicast user face, comprise do not illustrate in the drawings step S1, S2, S3, S4:
Step S1: equipment of the core network sends call setup request message to the terminal in multicast group, wherein, multicast user face address information is carried in described call setup request message, multicast user face address information comprises: the value of complete 1 field is that the value that the value of FF, Flags field is 1, the value of Scope field is 8, address generates type field is 1, the value of group's address field is 34F, wherein, the value of the group's address field metric group that can be obtained by equipment of the core network number 0847 is converted to;
Step S2: the terminal in described multicast group receives described multicast user face address information;
Step S3: the terminal in described multicast group determines the value of the group number reference address field in address, multicast user face according to the group number of the multicast group prestored, wherein, the group number of the multicast group prestored is decimal number 123456789012345, converts decimal number 123456789012345 to value that hexadecimal number 7048860DDF79 obtains group number reference address field;
Step S4: the terminal in described multicast group generates address, described multicast user face according to the value of described multicast user face address information and described group number reference address field, and this address, multicast user face is as shown in table 5;
Table 5
Numerical value in table 5 is hexadecimal number.
Known by table 5, the value of complete 1 field is FF; The value of Flags field is 1, represents an impermanent distribution, the non-multicast address based on clean culture prefix, non-embedded RP; The value of Scope field is 8, represents and organizes local scope; The value of address generation type field is 1, known based on table 4a and table 4b, put in order as group's address field, group number reference address field, fill field, and filling field value is full 0; The value of group's address field is 34F; The value of group number reference address field is 00007048860DDF79; The value of filling field is 00000000.Address, multicast user face can be expressed as FF18:134F:0:7048:860D:DF79:0:0.
In the above-described embodiments, equipment of the core network only need send the multicast user face address information of front 32 bits to the terminal in multicast group, the data content of air interface transmission is less, the time less required for transport multicast user surface address information.
The embodiment of the present invention additionally provides a kind of equipment of the core network, see Fig. 2, comprising:
Transmitting element 201, for sending multicast user face address information to the terminal in multicast group, to make the terminal in described multicast group receive described multicast user face address information, determine address, multicast user face according to described multicast user face address information and the group number of the multicast group prestored;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
The equipment of the core network of above-described embodiment, also comprises:
Acquiring unit, for obtaining the group number of described multicast group place group;
First generation unit, for generating the value of described group address field according to the group number of described multicast group place group;
Second generation unit, for generating described multicast user face address information according to the value of described group address field.
Embodiments provide a kind of terminal, see Fig. 3, this terminal comprises:
Receiving element 301, for receiving group user surface address information;
Determining unit 302, for determining the value of the group number reference address field in address, multicast user face according to the group number of the multicast group prestored;
Scalar/vector 303, for generating address, described multicast user face according to the value of described multicast user face address information and described group number reference address field;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
In a kind of possible implementation, described scalar/vector, determines group's address field, group number reference address field specifically for the value generating type field according to described address, fills putting in order and filling the value of field of field.
Particularly, described scalar/vector, specifically for when the filling type bit that described address generates type field is 1, determine that described filling field is 1 entirely, when the filling type bit that described address generates type field is 0, determine that described filling field is 0 entirely, wherein, filling type bit in described address generation type field is for representing the value of filling field, and other three bits are used for representing group's address field, group number reference address field, filling putting in order of field.
The content such as information interaction, implementation between each unit in the said equipment, subelement, due to the inventive method embodiment based on same design, particular content can see in the inventive method embodiment describe, repeat no more herein.
It should be noted that, in this article, the relational terms of such as first and second and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element " being comprised " limited by statement, and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical factor.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in the storage medium of embodied on computer readable, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium in.
Finally it should be noted that: the foregoing is only preferred embodiment of the present invention, only for illustration of technical scheme of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (9)
1. generate a method for address, multicast user face, it is characterized in that, comprising:
Equipment of the core network sends multicast user face address information to the terminal in multicast group;
Terminal in described multicast group receives described multicast user face address information;
Terminal in described multicast group determines the value of the group number reference address field in address, multicast user face according to the group number of the multicast group prestored;
Terminal in described multicast group generates address, described multicast user face according to the value of described multicast user face address information and described group number reference address field;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
2. method according to claim 1, is characterized in that, the terminal in described multicast group determines address, described multicast user face according to the value of described multicast user face address information and described group number reference address field, comprising:
The value that terminal in described multicast group generates type field according to described address is determined group's address field, group number reference address field, is filled putting in order and filling the value of field of field.
3. method according to claim 2, it is characterized in that, the value that terminal in described multicast group generates type field according to described address is determined group's address field, group number reference address field, is filled putting in order and filling the value of field of field, comprising:
When the filling type bit that described address generates type field is 1, terminal in described multicast group determines that described filling field is 1 entirely, when the filling type bit that described address generates type field is 0, terminal in described multicast group determines that described filling field is 0 entirely, wherein, filling type bit in described address generation type field is for representing the value of filling field, and other three bits are used for representing group's address field, group number reference address field, filling putting in order of field.
4. method according to claim 1, is characterized in that, before described equipment of the core network sends multicast user face address information to the terminal in multicast group, also comprises:
Described equipment of the core network obtains the group number of described multicast group place group;
Described equipment of the core network generates the value of described group address field according to the group of described multicast group place group number;
Described equipment of the core network generates described multicast user face address information according to the value of described group address field.
5. an equipment of the core network, is characterized in that, comprising:
Transmitting element, for sending multicast user face address information to the terminal in multicast group, to make the terminal in described multicast group receive described multicast user face address information, determine address, multicast user face according to described multicast user face address information and the group number of the multicast group prestored;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
6. equipment of the core network according to claim 5, is characterized in that, also comprises:
Acquiring unit, for obtaining the group number of described multicast group place group;
First generation unit, for generating the value of described group address field according to the group number of described multicast group place group;
Second generation unit, for generating described multicast user face address information according to the value of described group address field.
7. a terminal, is characterized in that, comprising:
Receiving element, for receiving group user surface address information;
Determining unit, for determining the value of the group number reference address field in address, multicast user face according to the group number of the multicast group prestored;
Scalar/vector, for generating address, described multicast user face according to the value of described multicast user face address information and described group number reference address field;
Address, described multicast user face comprises: complete 1 field, flag F lags field, scope Scope field, address generate type field, group's address field, group number reference address field, fill field;
Wherein, described complete 1 field takies first character joint, and value is all 1;
Described Flags field takies front 4 bits of second byte, and wherein, first bit value is 0; Second bit is the multicast address of the non-embedded convergent point RP of 0 expression, and second bit is 1 multicast address representing embedded RP; 3rd bit is the non-multicast address based on clean culture prefix of 0 expression, and the 3rd bit is the multicast address of 1 expression based on clean culture prefix; 4th bit is 0 expression permanent allocation multicast address, and the 4th bit is 1 multicast address representing impermanent distribution;
Described Scope field takies rear 4 bits of second byte, for representing the scope of multicast address, wherein, the value of described Scope field is 1 expression interface local scope, the value of described Scope field is 2 expression link local scope, the value of described Scope field is 4 expression management local scopes, the value of described Scope field is 5 expression site local scope, the value of described Scope field is that local scope is organized in 8 expressions, the value of described Scope field is that E represents global range, wherein, the value of described Scope field is hexadecimal values;
Described address generates front 4 bits that type field is the 3rd byte, and described address generates type field for representing group's address field, group number reference address field, filling putting in order and filling the value of field of field;
Described group address field is for representing the group number of multicast group place group;
Described group number reference address field is for representing the group number of multicast group;
The number of bits sum that the number of bits that the number of bits that described group address field takies, group number reference address field take, filling field take is 108, wherein, the number of bits that described group address field takies number of bits, group number reference address field take, to fill the number of bits that field takies be pre-set;
Described multicast user face address information comprises: value, the address of the value of complete 1 field, the value of Flags field, Scope field generate the value of type field, the value of group's address field.
8. terminal according to claim 7, it is characterized in that, described scalar/vector, determines group's address field, group number reference address field specifically for the value generating type field according to described address, fills putting in order and filling the value of field of field.
9. terminal according to claim 8, it is characterized in that, described scalar/vector, specifically for when the filling type bit that described address generates type field is 1, determine that described filling field is 1 entirely, when the filling type bit that described address generates type field is 0, determine that described filling field is 0 entirely, wherein, filling type bit in described address generation type field is for representing the value of filling field, and other three bits are used for representing group's address field, group number reference address field, filling putting in order of field.
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