CN103001778B - A kind of multicast packets transfer approach, site device and services set system - Google Patents

A kind of multicast packets transfer approach, site device and services set system Download PDF

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Publication number
CN103001778B
CN103001778B CN201110271908.2A CN201110271908A CN103001778B CN 103001778 B CN103001778 B CN 103001778B CN 201110271908 A CN201110271908 A CN 201110271908A CN 103001778 B CN103001778 B CN 103001778B
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described
a1
sig
multicast
vht
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CN201110271908.2A
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Chinese (zh)
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CN103001778A (en
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刘孟红
王学寰
高磊
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华为技术有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1886Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements or network protocols for addressing or naming
    • H04L61/20Address allocation
    • H04L61/2069Address allocation for group-, multicast- and broadcast-communication

Abstract

The embodiment of the present invention provides a kind of multicast packets transfer approach, site device and services set system, relates to the communications field, can simplify addressing system when multicast packets receives, reach the object of power saving.This multicast packets transfer approach comprises: the VHT-SIG-A1 receiving packet; Judge the multicast mark in described VHT-SIG-A1, if the described packet of described multicast mark instruction is multicast packets, then mate the partaof address of the described multicast packets in described VHT-SIG-A1 with the multicast address belonging to self; If described multicast address belonging to self does not mate with the partaof address of described multicast packets, then abandon receiving described multicast packets.The embodiment of the present invention is for transmitting multicast packets.

Description

A kind of multicast packets transfer approach, site device and services set system

Technical field

The present invention relates to the communications field, particularly relate to a kind of multicast packets transfer approach, site device and services set system.

Background technology

BSS (Basicserviceset, Basic Service Set) is the element of a WLAN (WirelessLocalareanetwork, WLAN (wireless local area network)).Be within a certain particular coverage, and the STA (Station, website) with certain association forms a BSS.

Within BSS system, 802.11ac standard can be adopted to communicate.802.11ac physical layer frame form is as shown in table 1:

L-STF L-LTF L-SIG VHT-SIG-A VHT-STF VHT-LTFs VHT-SIG-B Data

Table 1

The implication that each field represents is as shown in table 2:

Field Describe L-STF Non-high-throughput Short Training field (Non-HT Short Training field) L-LTF Non-high-throughput long training field (Non-HT Long Training field) L-SIG Non-high-throughput signaling field (Non-HT SIGNAL field) VHT-SIG-A Very high-throughput signaling A field (VHT Signal A field) VHT-STF Very high-throughput Short Training field (VHT Short Training field) VHT-LTF Very high-throughput long training field (VHT Long Training field) VHT-SIG-B Very high-throughput signaling B field (VHT Signal B field)

data data field, carries mac-layer protocol data cell (MPDU).

Table 2

In 802.11, MAC (Mediumaccesscontrol, medium education) bag is categorized as unicast packet, multicast packets and broadcast packet.Wherein, the corresponding website of the MAC layer receiver address of unicast packet; The corresponding one group of website of MAC layer receiver address of multicast packets; MAC layer receiver address 48 bit of broadcast packet is 1 entirely, all websites in corresponding BSS.

In existing multicast packets transport process, all websites in BSS all receive this multicast packets, and after MAC layer receiver address finishes receiving, could determine whether this multicast packets mails to oneself, the load mode of this multicast packets is loaded down with trivial details, and power consumption is large.

Summary of the invention

Embodiments of the invention provide a kind of multicast packets transfer approach, site device and services set system, can simplify multicast packets transport process, reach the object of power saving.

For achieving the above object, embodiments of the invention adopt following technical scheme:

On the one hand, a kind of multicast packets transfer approach is provided, comprises:

Receive the very high-throughput signaling A1 field VHT-SIG-A1 of packet;

Judge the multicast mark in described VHT-SIG-A1, if the described packet of described multicast mark instruction is multicast packets, then mate the partaof address of the described multicast packets in described VHT-SIG-A1 with the multicast address belonging to self;

If described multicast address belonging to self does not mate with the partaof address of described multicast packets, then abandon receiving described multicast packets.

On the one hand, provide a kind of multicast packets transfer approach, generate the very high-throughput signaling A1 field VHT-SIG-A1 of multicast packets; Wherein, have in described VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of described multicast packets;

Send described VHT-SIG-A1, so that receiving terminal website identifies according to described multicast, partaof address determines whether to receive described multicast packets.

On the one hand, a kind of receiving end station point apparatus is provided, comprises:

First receiving element, for receiving the very high-throughput signaling A1 field VHT-SIG-A1 of packet;

Judging unit, for judging the multicast mark in described VHT-SIG-A1;

First matching unit, if be multicast packets for the described packet of described multicast mark instruction, then mates the partaof address of the described multicast packets in described VHT-SIG-A1 with the multicast address belonging to self;

Processing unit, if do not mate with the partaof address of described multicast packets for the multicast address belonging to self, then abandons receiving described multicast packets.

On the one hand, a kind of transmitting terminal site device is provided, comprises:

Generation unit, for generating the very high-throughput signaling A1 field VHT-SIG-A1 of multicast packets; Wherein, have in described VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of described multicast packets;

Transmitting element, for sending described VHT-SIG-A1, so that receiving terminal website identifies according to described multicast, partaof address determines whether to receive described multicast packets.

On the one hand, a kind of services set system is provided, comprises:

Transmitting terminal site device, for generating the very high-throughput signaling A1 field VHT-SIG-A1 of multicast packets; Wherein, have in described VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of described multicast packets; Send described VHT-SIG-A1, so that receiving terminal website identifies according to described multicast, partaof address determines whether to receive described multicast packets;

At least one receiving end station point apparatus, for receiving the VHT-SIG-A1 of packet; Judge the multicast mark in described VHT-SIG-A1, if the described packet of described multicast mark instruction is multicast packets, then mate the partaof address of the described multicast packets in described VHT-SIG-A1 with the multicast address belonging to self; If described multicast address belonging to self does not mate with the partaof address of described multicast packets, then abandon receiving described multicast packets.

The multicast packets transfer approach that the embodiment of the present invention provides, site device and services set system, receiving terminal website is after the VHT-SIG-A1 receiving packet, multicast mark is wherein judged, if judge, this packet is multicast packets, then mate with the partaof address in VHT-SIG-A1 with multicast address belonging to self, if mate unsuccessful, then abandon receiving group bag.Like this, avoid all websites in prior art and all first receive the complete multicast address of multicast packets in data field, then carry out the mode that judges, enormously simplify addressing system when multicast packets receives, and effectively reach the object of power saving.

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 only 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.

The schematic flow sheet of the multicast packets transfer approach that Fig. 1 provides for the embodiment of the present invention;

The schematic flow sheet of the multicast packets transfer approach that Fig. 2 provides for another embodiment of the present invention;

The schematic flow sheet of the multicast packets transfer approach that Fig. 3 provides for further embodiment of this invention;

The residue available bits position of a kind of VHT-SIG-A1 that Fig. 4 provides for the embodiment of the present invention is compound mode;

The residue available bits position of the another kind of VHT-SIG-A1 that Fig. 5 provides for the embodiment of the present invention is compound mode;

The structural representation of the receiving end station point apparatus that Fig. 6 provides for the embodiment of the present invention;

The structural representation of another receiving end station point apparatus that Fig. 7 provides for the embodiment of the present invention;

The structural representation of the transmitting terminal site device that Fig. 8 provides for the embodiment of the present invention;

The structural representation of the services set system that Fig. 9 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

First the structure of the VHT-SIG-A (VHTSignalAfield, very high-throughput signaling A field) of physical layer frame form in 802.11 is described.

VHT-SIG-A field is divided into VHT-SIG-A1 and VHT-SIG-A2 two parts, and wherein the content that represents of VHT-SIG-A1 is as shown in table 3.

Table 3

The multicast packets transfer approach that the embodiment of the present invention provides, as shown in Figure 1, its step comprises:

S101, receiving terminal website receive the VHT-SIG-A1 of packet.

S102, receiving terminal website judge the multicast mark in VHT-SIG-A1, if this packet of multicast mark instruction is multicast packets, then mate the partaof address of the multicast packets in this VHT-SIG-A1 with the multicast address belonging to self.

Exemplary, this multicast mark can be arranged in the reserved field of VHT-SIG-A1.The partaof address of this multicast packets can be arranged on all or part of residue available bits position of VHT-SIG-A1.

If the multicast address belonging to S103 receiving terminal website self does not mate with the partaof address of multicast packets, then abandon receiving described multicast packets.

The multicast packets transfer approach that the embodiment of the present invention provides, receiving terminal website is after the VHT-SIG-A1 receiving packet, multicast mark is wherein judged, if judge, this packet is multicast packets, then mate with the partaof address in VHT-SIG-A1 with multicast address belonging to self, if mate unsuccessful, then abandon receiving this multicast packets.Like this, avoid all websites in prior art and all first receive the complete multicast address of multicast packets in data field, then carry out the mode that judges, enormously simplify addressing system when multicast packets receives, and effectively reach the object of power saving.

The multicast packets transfer approach that another embodiment of the present invention provides, as shown in Figure 2, comprising:

S201, transmitting terminal website generate the very high-throughput signaling A1 field VHT-SIG-A1 of multicast packets; Wherein, have in VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of this multicast packets.

Exemplarily, this multicast mark can be arranged in the reserved field in VHT-SIG-A1.The partaof address of this multicast packets can be arranged on all or part of residue available bits position of VHT-SIG-A1.

S202, transmitting terminal website send this VHT-SIG-A1, so that receiving terminal website determines whether to receive this multicast packets according to multicast mark, partaof address.

The multicast packets transfer approach that the embodiment of the present invention provides, has the multicast mark of instruction multicast packets in the VHT-SIG-A1 that transmitting terminal website generates, and the partaof address of this multicast packets; So that receiving terminal website determines whether to receive this multicast packets according to multicast mark, partaof address.Like this, for receiving terminal website, avoid all websites in prior art and all first receive the complete multicast address of multicast packets in data field, then carry out the mode that judges, enormously simplify addressing system when multicast packets receives, and effectively reach the object of power saving.

The multicast packets transfer approach that the embodiment of the present invention provides, as shown in Figure 3, comprising:

S301, transmitting terminal website generate the VHT-SIG-A1 of packet (MPDU, MediaProtocolDataUnit, media protocol data cell).Wherein, there is in this VHT-SIG-A1 the multicast mark whether this packet of instruction is multicast packets, and the partaof address of this multicast packets when being multicast packets.

Exemplary, the arranging of partaof address of multicast mark and multicast packets can have following two kinds of modes:

A kind of mode is: with reference to table 3, utilize the reserved field in VHT-SIG-A1---the 3rd bit or the 24th bit (i.e. B2 and B23 field in table 3) arrange multicast mark.

When can suppose the 3rd bit in VHT-SIG-A1 or the 24th bit for " 1 ", designation data bag is multicast packets; When the 3rd bit in this VHT-SIG-A1 or the 24th bit are " 0 ", designation data bag is non-multicast bag.Or when also can suppose the 3rd bit in VHT-SIG-A1 or the 24th bit for " 0 ", designation data bag is multicast packets; When the 3rd bit in this VHT-SIG-A1 or the 24th bit are " 1 ", designation data bag is non-multicast bag.

Correspondingly, the partaof address of multicast packets can be arranged in all or part of residue available bits position of VHT-SIG-A1.With reference to table 3, when the 3rd bit in VHT-SIG-A1 is multicast mark, the partaof address of multicast packets can be arranged in VHT-SIG-A1 the 5th to the 10th, the 14th to the 22nd, any multidigit of the 24th bit.When the 24th bit in VHT-SIG-A1 is multicast mark, the partaof address of multicast packets can be arranged in any multidigit of the the the 3rd, the 5th to the 10th, the 14th to the 22nd bit of VHT-SIG-A1.

When adopting above two kinds of multicasts mark, the compound mode of residue available bits position as shown in Figure 4, can adopt PartialAID 9 bits (B13-B21) that is the 14th to the 22nd bit is corresponding; Or 9 bits (B13-B21) corresponding to PartialAID add 1 bit reserved bit (B2 or B23), totally 10 bits remaining in reserved field the 3rd or the 24th bit; Or 6 bits (B4-B9) that GroupID is corresponding; Or 9 bits (B13-B21) corresponding to PartialAID add 6 bits (B4-B9) that GroupID is corresponding, totally 15 bits; Or PartialAID 9 bits (B13-B21) that is the 5th to the 10th bit is corresponding add 1 bit reserved bit (B2 or B23) remaining in reserved field the 3rd or the 24th bit, add 6 bits (B4-B9) that GroupID is corresponding, totally 16 bits; Or 6 bits (B4-B9) that GroupID is corresponding, add 1 bit reserved bit (B2 or B23), totally 7 bits remaining in reserved field the 3rd or the 24th bit.

Another kind of mode is: with reference to table 3, utilize the reserved field in VHT-SIG-A1---group ID (i.e. B4-B9 field in table 3) arranges multicast mark.Represent single user transmission owing to setting group ID as " 0 " or " 63 ", " 2 " to " 62 " represent multi-user transmission, and when therefore the present embodiment setting group ID is reserved " 1 ", designation data bag is multicast packets.

Correspondingly, the partaof address of multicast packets can be arranged in all or part of residue available bits position of VHT-SIG-A1.With reference to table 3, when the group ID in VHT-SIG-A1 is multicast mark, the partaof address of multicast packets can be arranged in the the 3rd, the 14th to the 22nd of VHT-SIG-A1 the, any multidigit of the 24th bit.Now, the compound mode of residue available bits position as shown in Figure 5, adopts 9 bits (B13-B21) that PartialAID is corresponding; Or 9 bits (B13-B21) corresponding to PartialAID add 1 bit reserved bit (B2 or B23), totally 10 bits in VHT-SIG-A1; Or 9 bits (B13-B21) corresponding to PartialAID add 2 bit reserved bit (B2 and B23), totally 11 bits in VHT-SIG-A1.

No matter adopting which kind of mode that above-mentioned partaof address is arranged, can be all the low X bit address of multicast packets be mapped in the available X bit of all or part of residue in VHT-SIG-A1; Or, the high X bit address of multicast packets is mapped in the available X bit of all or part of residue in VHT-SIG-A1; Again or, the multicast address hash function of multicast packets is mapped in all or part of residue available bits position in VHT-SIG-A1.

S302, transmitting terminal website send this VHT-SIG-A1.

S303, each receiving terminal website receive this VHT-SIG-A1.

S304, receiving terminal website judge the multicast mark in this VHT-SIG-A1.Namely the form that basis and transmitting terminal website are appointed judges that the multicast in VHT-SIG-A1 identifies.Because being arranged in step S301 of multicast mark illustrates, repeat no more herein.If determine that multicast mark designation data bag is multicast packets, then perform step S306; If determine that multicast mark designation data bag is non-multicast bag, perform step S305.

S305, carry out the reception flow process of unicast packet same as the prior art or broadcast packet.

S306, the receiving terminal website partaof address of this multicast packets in the multicast address coupling VHT-SIG-A1 belonging to self.Equally, the position of the partaof address of multicast packets is also appointed with transmitting terminal website in advance, and therefore, receiving terminal website can mate according to the form of making an appointment, it is specifically arranged being arranged in step S301 of form and illustrates, repeats no more herein.If determine the partaof addresses match of the multicast address belonging to self and this multicast packets in VHT-SIG-A1, then perform step S308; If determine that the multicast address belonging to self does not mate with the partaof address of this multicast packets in VHT-SIG-A1, then perform step S307.

S307, receiving terminal website are abandoned receiving packet.

S308, receiving terminal website receive the complete multicast address of this multicast packets in data field.

S309, the receiving terminal website complete multicast address of this multicast packets in the multicast address matched data field belonging to self.If match, then perform step S311; If do not match, then perform step S310.

S310, receiving terminal website receive this multicast packets.

S311, receiving terminal website are abandoned receiving this multicast packets.

The multicast packets transfer approach that the embodiment of the present invention provides, receiving terminal website is after the VHT-SIG-A1 receiving packet, multicast mark is wherein judged, if judge, this packet is multicast packets, then mate with the partaof address in VHT-SIG-A1 with multicast address belonging to self, if mate unsuccessful, then abandon receiving this multicast packets.Like this, avoid all websites in prior art and all first receive the complete multicast address of multicast packets in data field, then carry out the mode that judges, enormously simplify addressing system when multicast packets receives, and effectively reach the object of power saving.

The receiving end station point apparatus 60 that the embodiment of the present invention provides, as shown in Figure 6, comprising:

First receiving element 601, for receiving the VHT-SIG-A1 of packet.

Judging unit 602, for judging the multicast mark in VHT-SIG-A1.

First matching unit 603, if be multicast packets for multicast mark designation data bag, then with the partaof address of the multicast packets in the multicast address coupling VHT-SIG-A1 belonging to self.

Processing unit 604, if do not mate with the partaof address of multicast packets for the multicast address belonging to self, then abandons receiving this multicast packets.

The receiving end station point apparatus that the embodiment of the present invention provides, after the VHT-SIG-A1 receiving packet, multicast mark is wherein judged, if judge, this packet is multicast packets, then mate with the partaof address in VHT-SIG-A1 with multicast address belonging to self, if mate unsuccessful, then abandon receiving this multicast packets.Like this, avoid all websites in prior art and all first receive the complete multicast address of multicast packets in data field, then carry out the mode that judges, enormously simplify addressing system when multicast packets receives, and effectively reach the object of power saving.

Further, as shown in Figure 7, this receiving end station point apparatus also comprises:

Second receiving element 605, if for the partaof addresses match of the multicast address belonging to self and this multicast packets, then receive the complete multicast address of the described multicast packets in data field.

The transmitting terminal site device 80 that the embodiment of the present invention provides, as shown in Figure 8, comprising:

Generation unit 801, for generating the VHT-SIG-A1 of multicast packets; Wherein, have in VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of multicast packets.

Exemplary, in the VHT-SIG-A1 that generation unit 801 generates, multicast mark can be arranged in the reserved field of VHT-SIG-A1, and the partaof address of this multicast packets can be arranged in all or part of residue available bits position of VHT-SIG-A1.

Transmitting element 802, for sending VHT-SIG-A1, so that receiving terminal website determines whether receiving group bag according to multicast mark, partaof address.

The transmitting terminal site device that the embodiment of the present invention provides, has the multicast mark of instruction multicast packets in the VHT-SIG-A1 of generation, and the partaof address of this multicast packets; So that receiving terminal website determines whether to receive this multicast packets according to multicast mark, partaof address.Like this, for receiving terminal website, avoid all websites in prior art and all first receive the complete multicast address of multicast packets in data field, then carry out the mode that judges, enormously simplify addressing system when multicast packets receives, and effectively reach the object of power saving.

The services set system that the embodiment of the present invention provides, as shown in Figure 9, comprising:

Transmitting terminal site device 80, for generating the VHT-SIG-A1 of multicast packets; Wherein, have in VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of multicast packets; Send VHT-SIG-A1, so that receiving end station point apparatus 60 determines whether receiving group bag according to multicast mark, partaof address.

At least one receiving end station point apparatus 60, for receiving the VHT-SIG-A1 of packet; Judge the multicast mark in VHT-SIG-A1, if multicast mark designation data bag is multicast packets, then with the partaof address of the multicast packets in the multicast address coupling VHT-SIG-A1 belonging to self; If described multicast address belonging to self does not mate with the partaof address of described multicast packets, then abandon receiving described multicast packets.

In the present embodiment, transmitting terminal site device 80 and receiving end station point apparatus 60 and the transmitting terminal site device in a upper embodiment, receiving end station point apparatus structure are identical, do not repeat them here.

The services set system that the embodiment of the present invention provides, receiving end station point apparatus is after the VHT-SIG-A1 receiving packet, multicast mark is wherein judged, if judge, this packet is multicast packets, then mate with the partaof address in VHT-SIG-A1 with multicast address belonging to self, if mate unsuccessful, then abandon this multicast packets.Like this, avoid all websites in prior art and all first receive the complete multicast address of multicast packets in data field, then carry out the mode that judges, enormously simplify addressing system when multicast packets receives, and effectively reach the object of power saving.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims (12)

1. a multicast packets transfer approach, is characterized in that, comprising:
Receive the very high-throughput signaling A1 field VHT-SIG-A1 of packet;
Judge the multicast mark in described VHT-SIG-A1, if the described packet of described multicast mark instruction is multicast packets, the partaof address of the described multicast packets in described VHT-SIG-A1 is then mated with the multicast address belonging to self, described multicast mark is arranged in the reserved field of VHT-SIG-A1, and the partaof address of described multicast packets is arranged in all or part of residue available bits position of described VHT-SIG-A1;
If described multicast address belonging to self does not mate with the partaof address of described multicast packets, then abandon receiving described multicast packets.
2. method according to claim 1, is characterized in that,
When the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 1 ", described packet is indicated to be multicast packets; When the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 0 ", described packet is indicated to be non-multicast bag;
Or, when the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 0 ", indicate described packet to be multicast packets; When the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 1 ", described packet is indicated to be non-multicast bag;
Or, when the group ID in described VHT-SIG-A1 is " 1 ", indicate described packet to be multicast packets.
3., according to the arbitrary described method of claim 1-2, it is characterized in that,
When the 3rd bit in described VHT-SIG-A1 is multicast mark, the partaof address of described multicast packets be arranged in described VHT-SIG-A1 the 5th to the 10th, the 14th to the 22nd, any multidigit of the 24th bit;
Or when the 24th bit in described VHT-SIG-A1 is multicast mark, the partaof address of described multicast packets is arranged in any multidigit of the the the 3rd, the 5th to the 10th, the 14th to the 22nd bit of described VHT-SIG-A1;
Or when the group ID in described VHT-SIG-A1 is multicast mark, the partaof address of described multicast packets is arranged in the the 3rd, the 14th to the 22nd of described VHT-SIG-A1 the, any multidigit of the 24th bit.
4. method according to claim 1, is characterized in that, if the partaof addresses match of described multicast address belonging to self and described multicast packets, then receives the complete multicast address of the described multicast packets in data field.
5. a multicast packets transfer approach, is characterized in that, comprising:
Generate the very high-throughput signaling A1 field VHT-SIG-A1 of multicast packets; Wherein, have in described VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of described multicast packets, described multicast mark is arranged in the reserved field in VHT-SIG-A1, and the partaof address of described multicast packets is arranged in all or part of residue available bits position of described VHT-SIG-A1;
Send described VHT-SIG-A1, so that receiving terminal website identifies according to described multicast, partaof address determines whether to receive described multicast packets.
6. method according to claim 5, is characterized in that,
When the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 1 ", designation data bag is multicast packets; When the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 0 ", described packet is indicated to be non-multicast bag;
Or, when the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 0 ", indicate described packet to be multicast packets; When the 3rd bit in described VHT-SIG-A1 or the 24th bit are " 1 ", described packet is indicated to be non-multicast bag;
Or, when the group ID in described VHT-SIG-A1 is " 1 ", indicate described packet to be multicast packets.
7. according to the arbitrary described method of claim 5-6, it is characterized in that, all or part of residue available bits position that the partaof address of described multicast packets is arranged in described VHT-SIG-A1 comprises:
When the 3rd bit in described VHT-SIG-A1 is multicast mark, the partaof address of described multicast packets be arranged in described VHT-SIG-A1 the 5th to the 10th, the 14th to the 22nd, any multidigit of the 24th bit;
Or when the 24th bit in described VHT-SIG-A1 is multicast mark, the partaof address of described multicast packets is arranged in any multidigit of the the the 3rd, the 5th to the 10th, the 14th to the 22nd bit of described VHT-SIG-A1;
Or when the group ID in described VHT-SIG-A1 is multicast mark, the partaof address of described multicast packets is arranged in the the 3rd, the 14th to the 22nd of described VHT-SIG-A1 the, any multidigit of the 24th bit.
8. method according to claim 7, is characterized in that, all or part of residue available bits position that the partaof address of described multicast packets is arranged in described VHT-SIG-A1 also comprises:
The low X bit address of described multicast packets is mapped in the available X bit of all or part of residue in described VHT-SIG-A1;
Or, the high X bit address of described multicast packets is mapped in the available X bit of all or part of residue in described VHT-SIG-A1;
Or, the multicast address hash function of described multicast packets is mapped in all or part of residue available bits position in described VHT-SIG-A1.
9. a receiving end station point apparatus, is characterized in that, comprising:
First receiving element, for receiving the very high-throughput signaling A1 field VHT-SIG-A1 of packet;
Judging unit, for judging the multicast mark in described VHT-SIG-A1, described multicast mark is arranged in the reserved field of VHT-SIG-A1;
First matching unit, if be multicast packets for the described packet of described multicast mark instruction, then mate the partaof address of the described multicast packets in described VHT-SIG-A1 with the multicast address belonging to self, the partaof address of described multicast packets is arranged in all or part of residue available bits position of described VHT-SIG-A1;
Processing unit, if do not mate with the partaof address of described multicast packets for the multicast address belonging to self, then abandons receiving described multicast packets.
10. device according to claim 9, is characterized in that, described device also comprises:
Second receiving element, if for the partaof addresses match of the multicast address belonging to self and described multicast packets, then receive the complete multicast address of the described multicast packets in data field.
11. 1 kinds of transmitting terminal site device, is characterized in that, comprising:
Generation unit, for generating the very high-throughput signaling A1 field VHT-SIG-A1 of multicast packets; Wherein, have in described VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of described multicast packets, described multicast mark is arranged in the reserved field of VHT-SIG-A1, and the partaof address of described multicast packets is arranged in all or part of residue available bits position of described VHT-SIG-A1;
Transmitting element, for sending described VHT-SIG-A1, so that receiving terminal website identifies according to described multicast, partaof address determines whether to receive described multicast packets.
12. 1 kinds of services set systems, is characterized in that, comprising:
Transmitting terminal site device, for generating the very high-throughput signaling A1 field VHT-SIG-A1 of multicast packets; Wherein, have in described VHT-SIG-A1 and indicate whether that the multicast for multicast packets identifies; And the partaof address of described multicast packets; Send described VHT-SIG-A1, so that receiving terminal website identifies according to described multicast, partaof address determines whether to receive described multicast packets, described multicast mark is arranged in the reserved field of VHT-SIG-A1, and the partaof address of described multicast packets is arranged in all or part of residue available bits position of described VHT-SIG-A1;
At least one receiving end station point apparatus, for receiving the VHT-SIG-A1 of packet; Judge the multicast mark in described VHT-SIG-A1, if the described packet of described multicast mark instruction is multicast packets, then mate the partaof address of the described multicast packets in described VHT-SIG-A1 with the multicast address belonging to self; If described multicast address belonging to self does not mate with the partaof address of described multicast packets, then abandon receiving described multicast packets.
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