WO2013037303A1 - Procédé de transmission de paquets en multidiffusion, dispositif de station et système d'ensemble de services - Google Patents

Procédé de transmission de paquets en multidiffusion, dispositif de station et système d'ensemble de services Download PDF

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Publication number
WO2013037303A1
WO2013037303A1 PCT/CN2012/081384 CN2012081384W WO2013037303A1 WO 2013037303 A1 WO2013037303 A1 WO 2013037303A1 CN 2012081384 W CN2012081384 W CN 2012081384W WO 2013037303 A1 WO2013037303 A1 WO 2013037303A1
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WO
WIPO (PCT)
Prior art keywords
multicast
vht
sig
packet
address
Prior art date
Application number
PCT/CN2012/081384
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English (en)
Chinese (zh)
Inventor
刘孟红
王学寰
高磊
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2013037303A1 publication Critical patent/WO2013037303A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1886—Arrangements 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5069—Address allocation for group communication, multicast communication or broadcast communication

Definitions

  • Multicast packet transmission method station device and service set system
  • the present invention relates to the field of communications, and in particular, to a multicast packet transmission method, a site device, and a service set system. Background technique
  • BSS Basic Service Set
  • WLAN Wireless Local Area Network
  • a STA is located within a specific coverage area and has an associated STA (Station).
  • the 802.11ac standard can be used for communication.
  • the 802.11ac physical layer frame format is shown in Table 1:
  • MAC (Medium Access Control) packets are classified into unicast packets, multicast packets, and broadcast packets.
  • the MAC layer receiving address of the unicast packet corresponds to one site; the MAC layer receiving address of the multicast packet corresponds to a group of stations; and the MAC layer receiving address of the broadcast packet is all 48 bits, corresponding to all sites in the BSS.
  • all the sites in the BSS receive the multicast packet, and after receiving the MAC address receiving address, it can determine whether the multicast packet is sent to itself.
  • the transmission method is cumbersome and consumes a large amount of power.
  • a multicast packet delivery method including:
  • VHT-SIG-Al Receiving a very high throughput signaling A1 field VHT-SIG-Al of the data packet; determining a multicast identifier in the VHT-SIG-Al, if the multicast identifier indicates that the data packet is a multicast packet, The multicast address to which the multicast address belongs is matched with the partial multicast address of the multicast packet in the VHT-SIG-Al; if the multicast address to which the user belongs does not match the partial multicast address of the multicast packet, Then, the receiving of the multicast packet is abandoned.
  • a multicast packet transmission method is provided to generate a very high throughput signaling A1 field VHT-SIG-Al of a multicast packet; wherein the VHT-SIG-Al has a group indicating whether it is a multicast packet. a broadcast identifier; and a partial multicast address of the multicast packet;
  • a receiving end station device including:
  • a first receiving unit configured to receive a very high throughput signaling A1 field of the data packet VHT-SIG-Al
  • a determining unit configured to determine a multicast identifier in the VHT-SIG-Al
  • a first matching unit configured to: if the multicast identifier indicates that the data packet is a multicast packet, match a partial multicast of the multicast packet in the VHT-SIG-Al with a multicast address to which the multicast packet belongs Address
  • the processing unit is configured to abandon receiving the multicast packet if the multicast address to which it belongs does not match the partial multicast address of the multicast packet.
  • a transmitting end station apparatus including: a generating unit, a very high throughput signaling A1 field VHT-SIG-Al for generating a multicast packet; wherein the VHT-SIG-Al has an indication a multicast identifier of the multicast packet; and a partial multicast address of the multicast packet; and a sending unit, configured to send the VHT-SIG-Al, so that the receiving end station according to the multicast identifier, part of the multicast The address determines whether the multicast packet is received.
  • a service set system including:
  • a sender device a very high throughput signaling A1 field VHT-SIG-Al for generating a multicast packet, where the VHT-SIG-Al has a multicast identifier indicating whether it is a multicast packet; Transmitting a partial multicast address of the multicast packet; sending the VHT-SIG-Al, so that the receiving end station determines whether to receive the multicast packet according to the multicast identifier and a part of the multicast address;
  • At least one receiving end station device configured to receive a VHT-SIG-Al of the data packet; determining a multicast identifier in the VHT-SIG-Al, if the multicast identifier indicates that the data packet is a multicast packet, Matching a partial multicast address of the multicast packet in the VHT-SIG-Al with a multicast address to which it belongs; if the multicast address to which the user belongs does not match the partial multicast address of the multicast packet , then abandon receiving the multicast packet.
  • the multicast packet transmission method, the station device, and the service set system provided by the embodiment of the present invention after receiving the VHT-SIG-Al of the data packet, the receiving end station judges the multicast identifier therein, and if the data packet is determined to be The multicast packet matches the partial multicast address in VHT-SIG-Al with its own multicast address. If the match is unsuccessful, the multicast packet is discarded. In this way, all the sites in the prior art are prevented from receiving the complete multicast address of the multicast packet in the data field, and then determining the manner, which greatly simplifies the addressing mode when the multicast packet is received, and effectively saves power. the goal of.
  • FIG. 1 is a schematic flowchart of a method for transmitting a multicast packet according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for transmitting a multicast packet according to another embodiment of the present invention
  • FIG. 4 is a schematic diagram of a remaining available bit of the VHT-SIG-A1 according to an embodiment of the present invention
  • FIG. 5 is a combination manner of remaining available bits of another VHT-SIG-A1 according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a receiving end station apparatus according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of another receiving end station apparatus according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of a transmitting end station apparatus according to an embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of a service set system according to an embodiment of the present invention.
  • VHT-SIG-A VHT Signal A field
  • VHT-SIG-A field is divided into two parts: VHT-SIG-A1 and VHT-SIG-A2, and the contents indicated by VHT-SIG-A1 are shown in Table 3. Symbol (Field) Description ( Description)
  • B4-B9 Group ID (Group ID) 0 or 63 indicates single-user transmission, 2-62 indicates multi-user transmission, and 1 reservation.
  • B10-B12 indicates the number of empty time streams
  • B22 TXOP does not allow power saving 0 means power saving is allowed, 1 means power saving is not allowed
  • the multicast packet transmission method provided by the embodiment of the present invention is as shown in FIG. 1 , and the steps thereof include:
  • the receiving end station receives the VHT-SIG-A1 of the data packet.
  • the receiving end station determines the multicast identifier in the VHT-SIG-A1. If the multicast identifier indicates that the data packet is a multicast packet, the multicast address in the VHT-SIG-A1 is matched by the multicast address to which the multicast identifier belongs. Part of the multicast address of the packet. Exemplarily, the multicast identifier can be set in a reserved field of the VHT-SIG-A1. The partial multicast address of the multicast packet may be located in all or part of the remaining available bits in the VHT-SIG-A1.
  • the multicast packet is discarded.
  • the multicast packet transmission method provided by the embodiment of the present invention, the receiving end station receives the data packet After the VHT-SIG-Al, the multicast identifier is judged. If it is determined that the data packet is a multicast packet, the multicast address is matched with the partial multicast address in the VHT-SIG-Al. If the match is unsuccessful, the multicast packet is discarded.
  • a method for transmitting a multicast packet according to another embodiment of the present invention includes:
  • the sender station generates a multicast packet with a very high throughput signaling A1 field VHT-SIG-Al; wherein, the VHT-SIG-Al has a multicast identifier indicating whether it is a multicast packet; and the multicast packet Partial multicast address.
  • the multicast identity can be set in a reserved field in VHT-SIG-Al.
  • the partial multicast address of the multicast packet may be located in all or part of the remaining available bits in the VHT-SIG-Al.
  • the sending end station sends the VHT-SIG-Al, so that the receiving end station determines whether to receive the multicast packet according to the multicast identifier and the partial multicast address.
  • the VHT-SIG-Al generated by the sender site has a multicast identifier indicating the multicast packet, and a partial multicast address of the multicast packet; The multicast identifier and part of the multicast address determine whether to receive the multicast packet.
  • the multicast packet transmission method provided by the embodiment of the present invention includes:
  • the sender station generates a VHT-SIG-Al of a data packet (MPDU, Media Protocol Data Unit).
  • the VHT-SIG-Al has a multicast identifier indicating whether the data packet is a multicast packet, and a partial multicast address of the multicast packet when the multicast packet is a multicast packet.
  • the multicast identifier and the partial multicast address of the multicast packet can be set in the following two ways:
  • One way is to refer to Table 3, using the reserved field in VHT-SIG-Al - the third bit or the 24th bit (ie, the B2 and B23 fields in Table 3) to set the multicast identity. It can be assumed that the third bit or the 24th bit in the VHT-SIG-A1 is "1", indicating that the data packet is a multicast packet; when the third bit or the 24th bit in the VHT-SIG-A1 is "0" , indicating that the packet is a non-multicast packet.
  • the third bit or the 24th bit in the VHT-SIG-A1 is "0", indicating that the data packet is a multicast packet; the third bit or the 24th bit in the VHT-SIG-A1 is "
  • the partial multicast address of the multicast packet may be located in all or part of the remaining available bits in the VHT-SIG-A1.
  • the partial multicast address of the multicast packet may be located in any of the 5th to 10th, 14th to 22nd, and 24th bits in the VHT-SIG-A1.
  • the partial multicast address of the multicast packet may be located in the 3rd, 5th to 10th, 14th to 22nd bits of the VHT-SIG-A1. In any of a number of places.
  • the combination of the remaining available bits can be as shown in Figure 4, using the Partial AID, which is the 9th bit corresponding to the 14th to 22nd bits (B13-B21); or the Partial AID.
  • the multicast identifier is set using the reserved field in the VHT-SIG-A1, the group ID (ie, the B4-B9 field in Table 3). Since the group ID is set to "0" or "63" to indicate single-user transmission, and "2" to "62" to indicate multi-user transmission, in this embodiment, when the group ID is reserved, the indication packet is Multicast packets. Accordingly, part of the multicast address of the multicast packet may be located in all or part of the remaining available bits in VHT-SIG-A1.
  • VHT-SIG-A1 when the group ID in VHT-SIG-A1 is the multicast identifier
  • the partial multicast address of the multicast packet may be located in any of the 3rd, 14th to 22nd, and 24th bits in the VHT-SIG-A1.
  • the combination of bits is as shown in Figure 5, using 9 bits corresponding to the Partial AID (B13-B21); or 9 bits corresponding to the Partial AID (B13-B21) plus the 1-bit reserved bits in the VHT-SIG-A1 (B2 or B23), a total of 10 bits; or 9 bits corresponding to the Partial AID (B13-B21) plus 2 bits of reserved bits (B2 and B23) in VHT-SIG-A1, a total of 11 bits.
  • the lower X-bit address of the multicast packet may be mapped to all or part of the remaining available X bits in the VHT-SIG-A1; or, multicast The high X-bit address of the packet is mapped to all or part of the remaining available X bits in VHT-SIG-A1; or, the multicast address of the multicast packet is mapped to all of VHT-SIG-A1 by a hash function Or part of the remaining available bits.
  • the sending end station sends the VHT-SIG-Al.
  • Each receiving end station receives the VHT-SIG-A1.
  • the receiving end station determines the multicast identifier in the VHT-SIG-Al. That is, the multicast identity in VHT-SIG-Al is determined according to the format agreed with the sender site. Since the setting of the multicast identifier is already described in step S301, it will not be described here. If it is determined that the multicast identifier indicates that the data packet is a multicast packet, step S306 is performed; if it is determined that the multicast identifier indicates that the data packet is a non-multicast packet, step S305 is performed.
  • the receiving end station matches the partial multicast address of the multicast packet in the VHT-SIG-Al with the multicast address to which the receiving end belongs. Similarly, the location of the partial multicast address of the multicast packet is also pre-defined with the sender site. Therefore, the receiving site can perform matching according to a pre-agreed format.
  • the setting of the specific convention format is described in step S301. I will not repeat them here.
  • step S308 is performed; if it is determined that the multicast address to which it belongs is associated with the VHT-SIG-Al If the partial multicast addresses of the multicast packets do not match, step S307 is performed.
  • the receiving end station abandons receiving the data packet.
  • the receiving end station receives the complete multicast address of the multicast packet in the data field.
  • the receiving end station matches the complete multicast address of the multicast packet in the data field by using the multicast address to which the receiving end belongs. If they match, step S311 is performed; if not, step S310 is performed.
  • the receiving end station receives the multicast packet.
  • the receiving end station abandons receiving the multicast packet.
  • the receiving end station determines the multicast identifier therein, and if it determines that the data packet is a multicast packet, The multicast address matches the partial multicast address in VHT-SIG-A1. If the match is unsuccessful, the multicast packet is discarded. In this way, all the sites in the prior art are prevented from receiving the complete multicast address of the multicast packet in the data field, and then determining the manner, which greatly simplifies the addressing mode when the multicast packet is received, and effectively saves power. the goal of.
  • the receiving end station device 60 includes: a first receiving unit 601, which is configured to receive a VHT-SIG-A1 of a data packet.
  • the determining unit 602 is configured to determine a multicast identifier in the VHT-SIG-A1.
  • the first matching unit 603 is configured to: if the multicast identifier indicates that the data packet is a multicast packet, match the partial multicast address of the multicast packet in the VHT-SIG-A1 with the multicast address to which the multicast identifier belongs.
  • the processing unit 604 is configured to discard the multicast packet if the multicast address to which it belongs does not match the partial multicast address of the multicast packet.
  • the receiving end station device provided by the embodiment of the present invention receives the data packet
  • the multicast identifier is judged. If it is determined that the data packet is a multicast packet, the multicast address is matched with the partial multicast address in VHT-SIG-A1. If the match is unsuccessful, the multicast packet is discarded. In this way, all the sites in the prior art are prevented from receiving the complete multicast address of the multicast packet in the data field, and then determining the manner, which greatly simplifies the addressing mode when the multicast packet is received, and effectively saves power. the goal of.
  • the receiving end station device further includes:
  • the second receiving unit 605 is configured to receive the complete multicast address of the multicast packet in the data field if the multicast address to which it belongs matches the partial multicast address of the multicast packet.
  • the transmitting end station device 80 includes: a generating unit 801, configured to generate a VHT-SIG-A1 of a multicast packet; wherein, the VHT-SIG-A1 has an indication of whether it is a group The multicast identifier of the broadcast packet; and the partial multicast address of the multicast packet.
  • the multicast identifier may be Set in the reserved field of the VHT-SIG-A1, the partial multicast address of the multicast packet may be located in all or part of the remaining available bits in the VHT-SIG-A1.
  • the sending unit 802 is configured to send the VHT-SIG-A1, so that the receiving end station determines whether to receive the multicast packet according to the multicast identifier and the partial multicast address.
  • the sender site device provided by the embodiment of the present invention has a multicast identifier indicating a multicast packet and a partial multicast address of the multicast packet in the generated VHT-SIG-A1, so that the receiving site is configured according to the multicast identifier.
  • the service set system provided by the embodiment of the present invention, as shown in FIG. 9, includes:
  • a sender site device 80 configured to generate a multicast packet VHT-SIG-A1; wherein, VHT-SIG-A1 has a multicast identifier indicating whether it is a multicast packet; and a partial multicast address of the multicast packet; VHT-SIG-A1, so that the receiving site device 60 determines whether to receive the multicast packet according to the multicast identity and the partial multicast address.
  • At least one receiving station device 60 for receiving a data packet VHT-SIG-A1; determining a multicast identifier in the VHT-SIG-A1, and if the multicast identifier indicates that the data packet is a multicast packet, using the group to which it belongs
  • the broadcast address matches a partial multicast address of the multicast packet in the VHT-SIG-A1; if the multicast address to which the multicast address belongs does not match the partial multicast address of the multicast packet, the multicast packet is discarded.
  • the transmitting end station device 80 and the receiving end station device 60 have the same structure as the transmitting end station device and the receiving end station device in the previous embodiment, and details are not described herein again.
  • the receiving end station device After receiving the VHT-SIG-A1 of the data packet, the receiving end station device judges the multicast identifier therein, and if it determines that the data packet is a multicast packet, it uses its own The multicast address matches some of the multicast addresses in VHT-SIG-A1. If the match is unsuccessful, the multicast packet is discarded. In this way, all the sites in the prior art are prevented from receiving the complete multicast address of the multicast packet in the data field, and then determining the manner, which greatly simplifies the addressing mode when the multicast packet is received, and effectively saves power. the goal of.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

La présente invention se rapporte au domaine des communications. On décrit, dans un mode de réalisation de l'invention, un procédé de transmission de paquets en multidiffusion, un dispositif de station et un système d'ensemble de services pouvant simplifier le mode d'adressage dans un processus de réception de paquets en multidiffusion et faire économiser de l'énergie. Le procédé de transmission de paquets en multidiffusion consiste à: recevoir le VHT-SIG-A1 d'un paquet de données; vérifier une identification de multidiffusion dans le VHT-SIG-A1 et, si d'après cette identification le paquet de données est un paquet transmis en multidiffusion, utiliser alors une adresse de multidiffusion auto-affiliée pour la faire correspondre à des adresses de multidiffusion partielle du paquet transmis en multidiffusion dans le VHT-SIG-A1; si l'adresse de multidiffusion auto-affiliée ne correspond pas aux adresses de multidiffusion partielle du paquet transmis en multidiffusion, renoncer alors à la réception du paquet transmis en multidiffusion. Le mode de réalisation de l'invention est adapté à la transmission de paquets en multidiffusion.
PCT/CN2012/081384 2011-09-14 2012-09-14 Procédé de transmission de paquets en multidiffusion, dispositif de station et système d'ensemble de services WO2013037303A1 (fr)

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CN201110271908.2A CN103001778B (zh) 2011-09-14 2011-09-14 一种组播包传送方法、站点装置及服务集系统
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