WO2014134988A1 - 业务指示信息的发送处理、接收处理方法及装置 - Google Patents

业务指示信息的发送处理、接收处理方法及装置 Download PDF

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Publication number
WO2014134988A1
WO2014134988A1 PCT/CN2014/071338 CN2014071338W WO2014134988A1 WO 2014134988 A1 WO2014134988 A1 WO 2014134988A1 CN 2014071338 W CN2014071338 W CN 2014071338W WO 2014134988 A1 WO2014134988 A1 WO 2014134988A1
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WIPO (PCT)
Prior art keywords
indication information
information
sending
packet
indicated
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PCT/CN2014/071338
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English (en)
French (fr)
Inventor
吕开颖
韩志强
孙波
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP14760852.5A priority Critical patent/EP2966907A4/en
Priority to US14/773,641 priority patent/US20160029297A1/en
Publication of WO2014134988A1 publication Critical patent/WO2014134988A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method and a method for transmitting and processing a service indication information.
  • WLAN wireless local area network
  • IEEE 802.il group of the Institute of Electrical and Electronics Engineers has promulgated a series of the most common WLAN technology standards such as 802.11ah, 802.11b, 802.11g, 802.11 ⁇ , and subsequently established other task groups.
  • IEEE established the 802.11ah task group, whose main task is to media access control (Media Access Control, MAC for short) and The physical layer (ie, the PHY layer) is modified and enhanced to accommodate the needs of networks such as Smart Grid, Sensor Networks, and Environmental Process Automation.
  • a WLAN an Access Point (AP) and a plurality of non-AP stations (or STAs) associated with the AP form a basic service set ( Basic Service Set, or BSS for short.
  • BSS Basic Service Set
  • the STA must complete the authentication and association process with the AP before using the BSS service. If the STA is successfully associated, the AP assigns an association identifier (AID) to the STA.
  • AID association identifier
  • the AID is the identity of the STA in the BSS.
  • some typical use cases require support for large users. For example, smart meter reading requires up to 6000 sites under one BSS. Each site is assigned an AID when it is associated, and the system needs Regular or irregular data reporting on a large number of sites.
  • the sites under these applications are generally powered by batteries. Usually, it is required to replace the battery for a long time, so the site will enter the power saving mode when not transmitting and receiving.
  • the site transmits the paging information, that is, the Traffic Indication Map (TIM), which is also called the service indication information, in the system information that is periodically sent, that is, the beacon.
  • TIM Traffic Indication Map
  • Each bit in the service indication information map corresponds to the AID-one, indicating whether the site corresponding to the AID has to send downlink data.
  • the TIM service indication information For a network that supports a large number of sites, because the length of the TIM service indication information is too large, and one system information (beacon) can only carry the service indication of a certain number of sites, it is proposed to enter the TIM service indication information.
  • the page-by-page block processing is performed so that each system message beacon carries only one piece of information in the TIM service indication information.
  • the related art clearly defines the paging segment management user AID space, and segments the TIM indication information to ensure distributed site service indication and resource allocation.
  • the user AID space hierarchical structure processing that is, three-stage segmentation processing according to a page, a block, and a subblock.
  • Each page can be a page segment, which contains several blocks, each block containing several sub-blocks.
  • the user AID space is divided into four groups, each age is divided into several segment segments, and one of the age segments contains several blocks.
  • the TIM indication information is segmented (TIM Segment), and each beacon carries only one or more TIM Segments, and one TIM Segment carries the service indication information of the site corresponding to a page segment.
  • the non-access site listens to carry the service indication information element in cycles of several beacon intervals specified by the system.
  • a beacon of the DTIM (Delivery TIM), which carries one or more packet count information elements (segment count IE) for indicating one or more segment age segments in a packet and corresponding segmentation service indications.
  • the mapping relationship of the information and the sending location and notifying the non-access site.
  • the non-access site determines the location of the TIM segment in which the service indication information is located according to the packet indication information, so as to listen to the corresponding beacon, and further obtain the service indication information and the resource allocation information. As shown in Figure 1.
  • the TIM segment corresponding to each age segment indicated by a segment count IE is sequentially arranged, that is, the TIM segment corresponding to the first age segment1 is carried in the DTIM beacon, and the second age segment2 corresponds to The TIM segment is carried in the TIM beacon after the DTIM, in this order.
  • a DTIM beacon carries multiple segment count IEs, how to arrange TIM segments corresponding to different segment age segments in subsequent TIM beacons, thereby more effectively dispersing service indication information and resource allocation information of each site.
  • How to provide a more flexible service indication information sending period for different groups according to their service characteristics how to avoid each group site to monitor each DTIM beacon, thereby further improving the station's power saving capability.
  • the present invention provides a method for transmitting and processing service indication information, and a method for receiving and processing service indication information, and a technical problem of performing flexible configuration of service indication information and monitoring of each radio frame.
  • the device is to solve at least the above problems.
  • a method for transmitting a service indication information is provided.
  • the method for acquiring an AP of a wireless local area network includes: acquiring time information of sending packet indication information of a station in a wireless local area network, where The sending time information is used to indicate that the station receives the service indication information corresponding to the station indicated by the packet indication information according to the sending time indicated by the sending time information; and the sending time information is notified to the station indicated by the grouping indication information.
  • the foregoing sending time information includes at least one of: a sending period of the packet indication information, a sending time offset information of the service indication information in the sending period, and a specified sending time of the service indication information in the sending period, where the sending period is used for Indicates the time interval of the adjacent packet indication information.
  • the station notification sending time information indicated by the group indication information comprises: transmitting a radio frame to the station indicated by the group indication information, where the radio frame carries the transmission time information and the packet indication information.
  • the sending time offset information includes: a time offset of the service indication information corresponding to the designated station in the station indicated by the group indication information and the radio frame in the sending period of the current group indication information.
  • the specified site includes: a first segment of the plurality of segment sites indicated by the packet indication information, wherein the service indication information corresponding to the sites of each segment after the first segment site is sequentially arranged in the first segment After the service indication information corresponding to the site.
  • the foregoing sending time offset information is carried in the radio frame by: transmitting a time offset information by using a specified field; and implicitly indicating the sending time offset information by using the grouping indication information.
  • the sending the time offset information by the group indication information implicitly includes: the station indicated by the group indication information calculates the transmission time offset information according to the segmentation information in the group indication information, and/or the group indication information order.
  • a method for receiving service indication information is provided, which is applied to a site of a wireless local area network, including: receiving transmission time information from an AP in a wireless local area network; receiving the transmission time according to the transmission time information indication The packet indicates the service indication information corresponding to the site indicated by the information.
  • the foregoing sending time information includes at least one of: a sending period of the packet indication information, a sending time offset information of the service indication information in the sending period, and a specified sending time of the service indication information in the sending period, where the sending period is used for Indicates the time interval of the adjacent packet indication information.
  • the method further includes: receiving the group indication information according to the sending period.
  • a method for transmitting service indication information is provided, where the method is applied to an AP of a wireless local area network, and the method includes: an acquiring module, configured to acquire sending time information of group indication information of a site in a wireless local area network, where The sending time information is used to indicate the sending time indicated by the station according to the sending time information. Receiving the service indication information corresponding to the station indicated by the group indication information; and the notification module is configured to notify the station of the packet indication information of the transmission time information.
  • the acquiring module is configured to acquire sending time information including at least one of the following: a sending period of the packet indication information, a sending time offset information of the service indication information in the sending period, and a specified sending moment of the service indication information in the sending period.
  • the transmission period is used to indicate a time interval of the adjacent packet indication information.
  • a receiving processing apparatus for service indication information is provided, which is applied to a station of a wireless local area network, and includes: a first receiving module configured to receive transmission time information from an AP in a wireless local area network; The receiving module is configured to receive the service indication information corresponding to the station indicated by the packet indication information according to the sending moment indicated by the sending time information.
  • the first receiving module is configured to receive transmission time information including at least one of the following: a sending period of the packet indication information, a sending time offset information of the service indication information in the sending period, and a service indication information in the sending period. Specify a transmission time, where the transmission period is used to indicate a time interval of the adjacent packet indication information.
  • the method for notifying the station to instruct the station to receive the transmission time information of the service indication information corresponding to the station indicated by the packet indication information according to the sending time indicated by the sending time information is solved.
  • FIG. 2 is a flowchart of a method for transmitting service indication information according to Embodiment 1 of the present invention
  • FIG. 3 is a flowchart according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for receiving service indication information according to Embodiment 2 of the present invention
  • FIG. 5 is a flowchart of receiving service indication information according to Embodiment 2 of the present invention
  • a block diagram of the device FIG. 6 is a schematic diagram of mapping of a packet service indication and a Beacon according to Embodiment 3-4 of the present invention
  • FIG. 7 is a schematic diagram of mapping of a packet service indication and a Beacon according to Embodiment 5 of the present invention.
  • Embodiment 8 is a schematic diagram of Embodiment 6 according to the present invention. Schematic diagram of the mapping of the packet service indication and Beacon. BEST MODE FOR CARRYING OUT THE INVENTION
  • Embodiment 1 This embodiment provides a method for transmitting service indication information, which is applied to an AP of a wireless local area network.
  • FIG. 2 is a flowchart of a method for processing service indication information according to Embodiment 1 of the present invention. As shown in FIG.
  • the method includes: Step S202: Obtain sending time information of grouping indication information of a station in a wireless local area network, where the sending time information is used to indicate that the station receives the grouping indication information according to the sending time indicated by the sending time information.
  • the service indication information corresponding to the station Step S204, notifying the sending time information to the station indicated by the grouping indication information.
  • the foregoing packet indication information includes at least one of the following: packet identification information, a number of segments of the packet, and a starting point offset of the packet.
  • the foregoing sending time information may include, but is not limited to, at least one of the following: a sending period of the packet indication information, a sending time offset information of the service indication information in the sending period, and the foregoing service indication information in the sending period.
  • the specified transmission time wherein the foregoing transmission period is used to indicate a time interval of the adjacent packet indication information.
  • the specified transmission time may be expressed as, but not limited to, one of the following implementation forms: (1) determining a transmission moment of the first packet indication information that is sent, and each packet indication information after the first packet indication information is scheduled.
  • a time point is allocated for each packet indication information, and the packet indication information is transmitted when a time point corresponding to the packet indication information arrives.
  • the foregoing sending time information may be sent by a message dedicated to sending the information, or may be sent by: transmitting a radio frame to the station indicated by the packet indication information, where the radio frame carries the transmission time information and the packet indication information.
  • the foregoing radio frame may include, but is not limited to, a broadcast/multicast frame.
  • the service indication information when the sending time information is the sending time offset information and the sending period, the service indication information may be determined by the sending period of the packet indication information and the time offset information of the service indication information.
  • the transmission time (the transmission time is the offset from the current radio frame carrying the packet indication information in the transmission period of the current packet indication information), and the station may be notified of the service by using the foregoing packet indication information and the transmission time offset information.
  • the sending time offset information includes: a time offset of the service indication information corresponding to the designated station in the station indicated by the group indication information and the radio frame in the sending period of the current group indication information.
  • the designated site may be part or all of the site indicated by the grouping indication information.
  • the foregoing packet indication information may include, but is not limited to: segmentation information of the site indicated by the packet indication information.
  • the foregoing sending time offset information may further include: multiple segments indicated by the packet indication information. a time offset of the service indication information of the first segment of the site and the radio frame carrying the packet indication information, where the service indication information corresponding to the site of each segment after the first segment is sequentially arranged in the first After the service indication information corresponding to the segment site, for example, the site indicated by the packet indication information is divided into three segments from the destination: A segment, B segment, and C segment, and the service indication information of the segment A site may be in the current group indication.
  • the time offset from the radio frame in the transmission period of the information is used as the above-described transmission time offset information.
  • the foregoing sending time offset information may be carried in the foregoing radio frame by: transmitting a time offset information by using a specified field in the radio frame; and implicitly indicating a sending time by using the group indication information. Offset information.
  • the station indicated by the foregoing packet indication information calculates the transmission time offset information according to the segmentation information in the packet indication information, and/or the packet indication information order, and thus It can be known that the foregoing packet indication information may be multiple, and the radio frame may carry the sequence information of the multiple group indication information, where the sequence information may be represented by, but not limited to, the following forms: the foregoing multiple packets carried in the radio frame
  • the order of the indication information is the order information.
  • a service processing device for transmitting service indication information is also provided, and the device is applied to an AP of a wireless local area network, and is used to implement the foregoing embodiments and preferred embodiments. The modules involved in the device are described.
  • FIG. 3 is a block diagram showing the structure of a transmission processing apparatus for service indication information according to Embodiment 1 of the present invention.
  • the device includes: an obtaining module 30, connected to the notification module 32, configured to acquire sending time information of the grouping indication information of the station in the wireless local area network, where the sending time information is used to indicate that the station indicates according to the sending time information.
  • the sending time receives the service indication information corresponding to the station indicated by the packet indication information; and the notification module 32 is configured to notify the station indicating the packet indication information of the transmission time information.
  • the flexible configuration of the transmission of the packet indication information can also be implemented, and the station at the receiving end can also receive the service indication information corresponding to the site according to the transmission time indicated by the transmission time information, and can be quickly obtained.
  • the acquiring module 30 may be configured to acquire transmission time information including at least one of the following: a sending period of the packet indication information, a sending time offset information of the service indication information in the sending period, and the sending a specified transmission time of the service indication information in the period, where the foregoing transmission period is used to indicate a time interval of the adjacent packet indication information.
  • Embodiment 2 This embodiment is similar to Embodiment 1, except that this embodiment will be described on the site side. The embodiment provides a method for receiving service indication information, and the method is applied to a site of a wireless local area network. As shown in FIG.
  • the method includes: Step S402: Receive transmission time information from an AP in a wireless local area network; Step S404, The service indication information corresponding to the station indicated by the packet indication information is received according to the transmission time indicated by the foregoing transmission time information.
  • the foregoing sending time information includes, but is not limited to, a sending period of the packet indication information, a sending time offset information of the service indication information in the sending period, and a designated sending time of the service indication information in the sending period, where The foregoing sending period is used to indicate the time interval of the adjacent packet indication information.
  • the foregoing sending period may also be used for receiving the grouping indication information, that is, receiving the grouping indication information according to the foregoing sending period, where the foregoing sending periods corresponding to different grouping indication information may be the same or different, and
  • the manner in which the packet indication information is received may not be limited to the scenario in which the foregoing service indication information is received in the embodiment.
  • a receiving processing device for service indication information is further applied to a site of a wireless local area network. As shown in FIG. 5, the device includes: a first receiving module 50 connected to the second receiving module 52, and configured.
  • the second receiving module 52 is configured to receive the service indication information corresponding to the station indicated by the packet indication information according to the transmission time indicated by the transmission time information.
  • the first receiving module 50 is configured to receive transmission time information including but not limited to: a sending period of the packet indication information, and a sending time offset of the service indication information in the sending period. Information, a transmission time offset information of the service indication information in the transmission period, and a designated transmission time of the service indication information in the transmission period, wherein the transmission period is used to indicate a time interval of the adjacent packet indication information.
  • the AP periodically transmits system message radio frames and carries one or more packet indication information elements in a particular system message radio frame.
  • the foregoing packet indicates that the information element carries the transmission period information of the packet indication information and/or the transmission time offset information of the service indication information in the packet indication information transmission period.
  • the AP performs time offset from the system message radio frame sent by the AP in the sending period of the current packet indication information according to the service indication information of the part or all stations included in the foregoing packet indication information, and is in each corresponding target system message radio frame.
  • the packet site sends the service indication information.
  • the AP may display the transmission time offset information indicating the packet service indication information through the field in the specific system message radio frame described above.
  • the station After receiving the specific system message radio frame sent by the AP, the station obtains the sending period information of the packet indication information corresponding to the packet and/or the sending time offset information of the packet service indication information, and calculates the target carrying the corresponding service indication information.
  • the AP may also implicitly indicate the transmission time offset information of the packet service indication information by using the packet information carried in the specific system message radio frame described above.
  • the AP by using the packet indication information carried in the radio frame of the system message, notifies the number of packet indication information and the packet indication information sequence in the system message radio frame of the station included in the packet indication information.
  • the station receives the foregoing system message radio frame sent by the AP, obtains the packet indication information, the number of the packet indication information, and the packet indication information sequence information, and calculates the target system message radio frame carrying the packet site service indication information and the received AP sending.
  • the time of the above specific system message radio frame Offset. And calculating, according to the calculated time offset information, a target sending time of the target system message radio frame carrying the corresponding service indication information, and receiving the corresponding service indication information at the target sending time.
  • Embodiment 3 A BSS has one AP and 6000 associated non-access site STAs. During the association process, the AP allocates a unique AID in the BSS for each STA.
  • the site's AID space can be grouped, that is, page segment, for example, divided into 4 pages, each block has 32 blocks, and each block has 64 sites.
  • the AP broadcasts the beacon information to the station, and carries the service indication information element TIM/DTIM with the page segment as the granularity, that is, the TIM/DTIM contains the service indication information of the site in one or more page segments.
  • the non-access site cycle in the power-saving mode wakes up to monitor the beacon information, and detects the service indication bit map in the TIM/DTIM to determine whether the AP caches the data of the site.
  • all sites under the BSS are divided into four groups according to pages, namely pagel, page2, page3, and page4.
  • Each page of the page corresponds to a packet indication information element IE, which includes information such as a page identification information, a page count, and a segment count corresponding to the page index, for example, divided into two page segments ( Referred to as PS), namely PS1, PS2.
  • a segment count IE carrying one or more packets in a DTIM beacon the segment count IE of each packet carries the information such as the age index, segment count, and the sending period information of the packet indication information element segment count IE corresponding to the packet (DTIM interval) and the transmission time offset information (TIM offset) of the packet service indication information in the current transmission period.
  • the non-access station After receiving the DTIM beacon of the segment count IE of the packet in which it is located, the non-access station obtains the transmission period information DTIM interval and the transmission time offset information (TIM offset).
  • the current DTIM beacon carries the segment count of the packet page1 and the packet page2.
  • the segment count IE corresponding to the pagel indicates that the pagel is divided into two segmented page segments
  • the segment count IE corresponding to PlS1 and PlS2oPage2 indicates that the age2 is divided into two segmentation age segments, which are simply referred to as P2S1 and P2S2.
  • the non-access stations STA1 and STA2 belong to P1S1 and P2S1, respectively.
  • the STA1 obtains the DTIM period carrying the pagel segment count IE according to the DTIM interval of the packet indication information carried by the segment count IE corresponding to the Page1 and the transmission time offset information (TIM offset) of the packet service indication information in the current transmission period.
  • the segment count IE of page1 indicates that the DTIM Interval is 2, indicating that the segment count IE of page1 is sent in a period of two DTIM beacons; the TIM Offset is 0, indicating that the TIM corresponding to PlS1 is the current DTIM, and the TIM corresponding to PlS1 is the current
  • the DTIM is offset backwards by the TIM in one beacon.
  • the segment count IE of Page 2 indicates that the DTIM Interval is 1, indicating that the segment count IE of page2 is sent in a period of one DTIM beacon; the TIM Offset is 2, indicating the TIM corresponding to P2S1.
  • the current DTIM is backward offset by the TIM in the two beacons.
  • the TIM corresponding to the P2S2 is offset from the TIM in the three beacons by the current DTIM.
  • STA1 After receiving the DTIM beacon sent by the AP, STA1 confirms whether it is the segment count IE of its own group and the segmented page segment to which it belongs according to the page index and segment count information in the segment count IE. If yes, the segment count IE transmission period of pagel and the TIM offset information of the PI SI in the current transmission period are further obtained according to DTIM Interval and TIM Offset in agel's segment count IE. And obtaining a target beacon transmission time (TBTT) of the target beacon in the current transmission period, and receiving the beacon to obtain the corresponding service indication information TIM at the TBTT time. As shown in Figure 6.
  • TBTT target beacon transmission time
  • Embodiment 4 is similar to Embodiment 3 except that the AP indicates the location of the TIM segment in which it is located in an implicit manner.
  • the AP carries the information such as the age index, segment count, and sending period in the segment count IE carried by the DTIM beacon.
  • the page can know the page page indicated by the segment count IE according to the above information, and the number of segments of the page.
  • the DTIM beacon carries more than one segment count IE
  • the page indicated by the first segment count IE is pagel.
  • the number of segments is SegmentCountl, and the first segment indicated by it is denoted as P1S1, and the corresponding TIM segment is the current DTIM.
  • the TIM segment corresponding to the subsequent segment corresponds to the TIM in the subsequent beacon.
  • the page indicated by the second segment count IE is page2, the number of segments is SegmentCount2, and the first segment indicated is recorded as P2S1, and the corresponding TIM segment is the TIM corresponding to the current DTIM offset SegmentCountl beacon. .
  • the TIM segment corresponding to the subsequent segment corresponds to the TIM in the subsequent beacon.
  • SegmentCountl takes a value of 2.
  • STA1 After receiving the DTIM beacon sent by the AP, STA1 confirms whether it is the segment count IE of its own group and the page segment to which it belongs according to the page index and segment count information in the segment count IE. If yes, further according to the segment count IE of pagel.
  • the DTIM Interval obtains the segment count IE transmission period of pagel, and determines the transmission time TBTT of the target DTIM beacon of the next segment count IE corresponding to it.
  • the DTIM interval is 2, that is, every two DTIM beacons are one cycle.
  • the transmission time offset information of the TIM segment corresponding to the page segment to which the page segment belongs is calculated in the current transmission period, thereby obtaining The target transmission time of the target beacon carrying the corresponding service indication information TIM is received, and the beacon is received at the TBTT time to obtain the corresponding service indication information TIM.
  • the current DTIM beacon carries two segment count IEs, where the segment count IE corresponding to STA1 is the second one and belongs to the second sub-page in the page.
  • the segment page segment, with a value of 2 is denoted as P2S2.
  • the first segment count IE indicates that the page contains two segments, so the time offset between the TIM segment corresponding to STA1 and the current DTIM is SegmentCountl + page segment-1, that is, 3 beacons, that is, after the DTIM beacon.
  • the third TIM beacon As shown in Figure 6.
  • Embodiment 5 Similar to Embodiment 4, the AP indicates the location of the TIM segment in which it is located in an implicit manner.
  • the DTIM beacon carries more than one segment count IE
  • the page indicated by the first segment count IE is pagel, and the first segment indicated by it is recorded as P1S1, and the corresponding TIM segment is the current DTIM.
  • the TIM segments corresponding to the subsequent segments are sequentially corresponding to the TIMs in the subsequent beacons.
  • the page indicated by the second segment count IE is page2, the first segment indicated is denoted as P2S1, and the corresponding TIM segment is also the current DTIM.
  • the TIM segment corresponding to the subsequent segment corresponds to the TIM in the subsequent beacon. As shown in Figure 7.
  • STA1 After receiving the DTIM beacon sent by the AP, STA1 confirms whether it is the segment count IE of the packet and the page segment to which it belongs according to the page index information in the segment count IE. If yes, the segment count IE sending period of the page1 is further obtained according to the DTIM Interval in the segment count IE of the page1, and the sending time TBTT of the target DTIM beacon of the next segment count IE corresponding to the first segment count IE is determined. At the same time, according to the segmentation page segment to which it belongs, the time offset of the corresponding TIM segment and the current DTIM is determined.
  • the target transmission time TBTT of the target beacon that carries the corresponding service indication information TIM in the current transmission period is obtained, and the beacon is received at the TBTT time to obtain the corresponding service indication information TIM.
  • STA1 belongs to the second segment of the second page, which is recorded as P2S2.
  • the time offset between the corresponding TIM segment and the current DTIM is 1 beacon, which is the first TIM beacon after the DTIM beacon.
  • the current DTIM beacon carries the segment count IE of the packet page1 and the packet page2.
  • the segment count IE corresponding to the agel refers to the age1 divided into two segmentation age segments, which are referred to as P1S1 and P1S2.
  • the corresponding segment count IE indicates that page 2 is divided into two segmentation age segments, which are simply referred to as P2S1 and P2S2.
  • the non-access stations STA1 and STA2 belong to P1S1 and B P2S1, respectively.
  • the STA1 obtains the DTIM period carrying the pagel segment count IE according to the DTIM interval of the packet indication information carried by the segment count IE corresponding to the page1 and the transmission time offset information (TIM offset) of the packet service indication information in the current transmission period. And knowing the time offset of the TIM carrying its unicast service indication information relative to the above DTIM.
  • agel's segment count IE indicates DTIM Interval
  • the value of 2 indicates that the segment count IE of page1 is sent in the period of 2 DTIM beacons.
  • the TIM Offset is 0, indicating that the TIM corresponding to P1S1 is the current DTIM, and the TIM corresponding to P1S1 is offset from the current DTIM by one beacon.
  • the segment count IE of Page 2 indicates that the DTIM Interval is 1, indicating that the segment count IE of page2 is sent in a period of one DTIM beacon; the TIM Offset is 1, indicating that the TIM corresponding to P2S1 is offset from the current DTIM by one beacon.
  • the TIM corresponding to P2S2 offsets the current DTIM backwards by 2 TIMs in the beacon.
  • software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium is provided, the software being stored, including but not limited to: an optical disk, a floppy disk, a hard disk, a rewritable memory, and the like.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
  • INDUSTRIAL APPLICABILITY The above technical solution provided by the present invention can be applied to a process of transmitting and receiving a service indication information, and receiving a notification to a station for instructing the station to send the packet according to the transmission time indicated by the transmission time information.
  • the manner of indicating the transmission time information of the service indication information corresponding to the site indicated by the information and solving the technical problem that the transmission of the service indication information is flexibly configured and the monitoring of each radio frame needs to be performed in the related art, thereby realizing Flexible configuration transmission and fast acquisition of service indication information (such as group user paging information).

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Abstract

本发明提供了一种业务指示信息的发送处理、接收处理方法及装置，其中，上述发送处理方法应用于无线局域网的AP，该方法包括：获取无线局域网中站点的分组指示信息的发送时间信息，其中，发送时间信息用于指示站点按照发送时间信息指示的发送时刻接收分组指示信息指示的站点所对应的业务指示信息；向分组指示信息指示的站点通知发送时间信息。采用本发明提供的上述技术方案，解决了相关技术中，尚无对业务指示信息的发送进行灵活配置以及需要对每个无线帧进行监测等技术问题，从而实现了对业务指示信息（例如分组用户寻呼信息）的灵活配置发送及快速获取。

Description

业务指示信息的发送处理、 接收处理方法及装 技术领域 本发明涉及无线通信领域， 尤其涉及一种业务指示信息的发送处理、 接收处理方 法及装置。 背景技术 目前，在无线网络领域，无线局域网（Wireless Local Area Network,简称为 WLAN) 快速发展， WLAN的应用范围日益扩大。 为应对各种网络需求， 电气和电子工程师协 会工业规范 IEEE802.il组颁布了 802.11ah， 802.11b, 802.11g, 802.11η等一系列最普 通的 WLAN技术标准， 随后又陆续成立了其他任务组， 致力于发展涉及现有 802.11 技术改进的规范， 例如， 随着物联网的发展， IEEE成立了 802.11ah任务组， 其主要任 务就是对 WLAN的媒体接入控制 （Media Access Control, 简称为 MAC) 层和物理层 (即 PHY层）进行修改和增强， 以便适应智能电网 （Smart Grid)、 传感器网络、 环境 农业监测 ( Environmental/ Agricultural Monitoring ) 工业过程自动化 (Industrial Process Automation) 等网络的需求。 无线局域网中， 一个接入点 （Access Point, 简称 AP) 以及与 AP相关联的多个非 接入点站点（或称为站点）（non-AP Station, 简称 STA)组成了一个基本服务集（Basic Service Set, 简称 BSS)。 STA在使用 BSS的服务之前， 必须与 AP完成鉴权和关联过 程， 若成功关联则 AP为 STA分配关联标识 （Association identifier, 简称 AID)， AID 为 STA在本 BSS的身份标识。 802.11ah任务组定义的新的 WLAN应用场景中，一些典型用例要求支持大用户数， 例如智能抄表， 要求一个 BSS下最多可以支持 6000个站点， 每个站点关联时被分配 AID, 且系统需要对大数量站点进行定期或不定期的数据上报， 这些应用下的站点一 般通过电池供电， 通常要求长时间不需更换电池， 因此站点在不进行收发操作时会进 入节电模式， 对于节电模式的站点， 通过在定期发送的系统信息即信标帧 （beacon) 中发送寻呼信息， 即业务指示信息映射图 （Traffic Indication Map, 简称 TIM)， 又称 为业务指示信息， 通知其是否有缓冲数据待发。 其中业务指示信息映射图中的每个比 特与 AID—一对应， 指示相应 AID的站点是否有待发送下行数据。 对于支持大数量站点的网络， 由于 TIM业务指示信息的长度过大， 而一个系统信 息 （beacon) 中仅能承载一定数量站点的业务指示， 因此提出将 TIM业务指示信息进 行分页分块处理， 使得每个系统消息 beacon中仅承载 TIM业务指示信息中的一段信 息。 相关技术中明确规定了分页分段管理用户 AID空间， 并通过将 TIM 指示信息分 段发送， 从而保证分散站点业务指示与资源分配。 用户 AID空间分级结构化处理， 即 按照页 （page)、 块 （block) 和子块 （subblock) 进行三级分段处理。 每页 page可以 进行分段（page segment), 其中包含若干块， 每个块中包含若干子块。例如， 用户 AID 空间总共分为 4个 age, 每个 age分为若干分段 segments, 其中一个 age segment 中包含有若干个 block。 将 TIM指示信息进行分段处理 （TIM Segment), 每个 beacon 中仅承载一个或多个 TIM Segment, 其中一个 TIM Segment携带一个页分段 （page segment) 所对应的站点的业务指示信息。 非接入站点以系统规定的若干个 beacon 间隔为周期监听携带业务指示信息元素
DTIM (Delivery TIM) 的 beacon, 该 beacon中同时携带有一个或多个分组指示信息元 素（segment count IE),用于指示一个分组中的一个或多个分段 age segment与对应的 分段业务指示信息的映射关系及发送位置， 并通知给非接入站点。 非接入站点根据该 分组指示信息判断自己的业务指示信息所在的 TIM segment的位置， 从而监听相应的 beacon, 进一步获取业务指示信息及资源分配信息。 如图 1所示。 相关技术中， 一个 segment count IE 中所指示的各个 age segment对应的 TIM segment按顺序依次排开， 即第一个 age segmentl所对应的 TIM segment在 DTIM beacon中携带，第二个 age segment2所对应的 TIM segment在 DTIM后的 TIM beacon 中携带， 依此顺序排列。 当某个 DTIM beacon 中携带多个 segment count IE时， 如何 在后续的 TIM beacon中排列不同分段 age segment所对应的 TIM segment, 从而更有 效地分散各个站点的业务指示信息及资源分配信息。 如何为不同分组根据其业务特性 提供更加灵活的业务指示信息发送周期， 如何避免各分组站点对每个 DTIM beacon进 行监听， 从而进一步提高站点的省电能力。 针对相关技术中的上述问题， 目前尚未提出有效的解决方案。 发明内容 针对相关技术中， 尚无对业务指示信息的发送进行灵活配置以及需要对每个无线 帧进行监测等技术问题， 本发明实施例提供了一种业务指示信息的发送处理、 接收处 理方法及装置， 以至少解决上述问题。 根据本发明的一个实施例， 提供了一种业务指示信息的发送处理方法， 应用于无 线局域网的 AP，包括：获取无线局域网中站点的分组指示信息的发送时间信息，其中， 发送时间信息用于指示站点按照发送时间信息指示的发送时刻接收分组指示信息指示 的站点所对应的业务指示信息； 向分组指示信息指示的站点通知发送时间信息。 优选地， 上述发送时间信息包括以下至少之一： 分组指示信息的发送周期、 发送 周期内业务指示信息的发送时间偏移信息、发送周期内业务指示信息的指定发送时刻， 其中， 发送周期用于指示相邻的分组指示信息的时间间隔。 优选地， 向分组指示信息指示的站点通知发送时间信息包括： 向分组指示信息指 示的站点发送无线帧， 其中， 无线帧中携带有发送时间信息和分组指示信息。 优选地， 上述发送时间偏移信息包括： 分组指示信息指示的站点中指定站点所对 应的业务指示信息在当前分组指示信息的发送周期内与无线帧的时间偏移。 优选地， 上述指定站点包括： 分组指示信息指示的多个分段站点中第一段站点， 其中， 该第一段站点后的各个分段的站点所对应的业务指示信息依次排列在第一段站 点所对应的业务指示信息之后。 优选地， 上述发送时间偏移信息通过以下之一方式携带在无线帧中： 通过指定字 段指示发送时间偏移信息； 通过分组指示信息隐式地指示发送时间偏移信息。 优选地， 通过分组指示信息隐式地指示发送时间偏移信息， 包括： 分组指示信息 指示的站点根据分组指示信息中的分段信息， 和 /或分组指示信息次序计算得到发送时 间偏移信息。 根据本发明的另一个实施例， 提供了一种业务指示信息的接收处理方法， 应用于 无线局域网的站点， 包括： 接收来自无线局域网中 AP的发送时间信息； 按照发送时 间信息指示的发送时刻接收分组指示信息指示的站点所对应的业务指示信息。 优选地， 上述发送时间信息包括以下至少之一： 分组指示信息的发送周期、 发送 周期内业务指示信息的发送时间偏移信息、发送周期内业务指示信息的指定发送时刻， 其中， 发送周期用于指示相邻的分组指示信息的时间间隔。 优选地， 上述方法还包括： 按照发送周期接收分组指示信息。 根据本发明的又一个实施例， 提供了一种业务指示信息的发送处理装置， 应用于 无线局域网的 AP， 包括： 获取模块， 设置为获取无线局域网中站点的分组指示信息的 发送时间信息， 其中， 发送时间信息用于指示站点按照发送时间信息指示的发送时刻 接收分组指示信息指示的站点所对应的业务指示信息； 通知模块， 设置为向分组指示 信息指示的站点通知发送时间信息。 优选地， 获取模块， 设置为获取包括以下至少之一内容的发送时间信息： 分组指 示信息的发送周期、 发送周期内业务指示信息的发送时间偏移信息、 发送周期内业务 指示信息的指定发送时刻，其中， 发送周期用于指示相邻的分组指示信息的时间间隔。 根据本发明的再一个实施例， 提供了一种业务指示信息的接收处理装置， 应用于 无线局域网的站点， 包括： 第一接收模块， 设置为接收来自无线局域网中 AP的发送 时间信息； 第二接收模块， 设置为按照发送时间信息指示的发送时刻接收分组指示信 息指示的站点所对应的业务指示信息。 优选地， 上述第一接收模块， 设置为接收包括以下至少之一内容的发送时间信息: 分组指示信息的发送周期、 发送周期内业务指示信息的发送时间偏移信息、 发送周期 内业务指示信息的指定发送时刻， 其中， 发送周期用于指示相邻的分组指示信息的时 间间隔。 通过本发明实施例， 采用向站点通知用于指示所述站点按照所述发送时间信息指 示的发送时刻接收所述分组指示信息指示的站点所对应的业务指示信息的发送时间信 息的方式， 解决了相关技术中， 尚无对业务指示信息的发送进行灵活配置以及需要对 每个无线帧进行监测等技术问题， 从而实现了对业务指示信息 （例如分组用户寻呼信 息） 的灵活配置发送及快速获取。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部分， 本发 明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限定。 在附图 中- 图 1为根据相关技术的分组业务指示与 Beacon的映射示意图； 图 2 为根据本发明实施例 1的业务指示信息的发送处理方法的流程图； 图 3为根据本发明实施例 1的业务指示信息的发送处理装置的结构框图； 图 4为根据本发明实施例 2的业务指示信息的接收处理方法的流程图； 图 5为根据本发明实施例 2的业务指示信息的接收处理装置的结构框图; 图 6为根据本发明实施例 3-4的分组业务指示与 Beacon的映射示意图; 图 7为根据本发明实施例 5的分组业务指示与 Beacon的映射示意图； 以及 图 8为根据本发明实施例 6的分组业务指示与 Beacon的映射示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不冲突的 情况下， 本申请中的实施例及实施例中的特征可以相互组合。 实施例 1 本实施例提供一种业务指示信息的发送处理方法， 该方法应用于无线局域网的 AP。 图 2为根据本发明实施例 1的业务指示信息的发送处理方法的流程图。 如图 2所 示， 该方法包括： 步骤 S202， 获取无线局域网中站点的分组指示信息的发送时间信息， 其中， 发送 时间信息用于指示站点按照发送时间信息指示的发送时刻接收分组指示信息指示的站 点所对应的业务指示信息； 步骤 S204， 向上述分组指示信息指示的站点通知发送时间信息。 通过上述处理步骤， 由于向站点通知了上述分组指示信息的发送时间信息， 因此， 可以实现对分组指示信息的发送的灵活配置， 并且， 接收端的站点也可以根据该发送 时间信息指示的发送时刻接收站点所对应的业务指示信息， 可以快速获取业务指示信 息， 并且， 提高了省电能力。 在本实施例中， 上述分组指示信息至少包括以下之一： 分组识别信息、 分组的分 段数、 分组的起始点偏移。 在本实施例中， 上述发送时间信息可以包括但不限于以下至少之一内容： 分组指 示信息的发送周期、 该发送周期内业务指示信息的发送时间偏移信息、 上述发送周期 内上述业务指示信息的指定发送时刻， 其中， 上述发送周期用于指示相邻的分组指示 信息的时间间隔。 其中， 上述指定发送时刻可以表现为但不限于以下之一实现形式： ( 1 )确定所发送的第一个分组指示信息的发送时刻， 该第一个分组指示信息后的 各个分组指示信息按照预定规则 （例如按照从前往后依次排列发送、 按照预先规定的 其它发送顺序等） 排列在第一个分组指示信息之后发送。 （2) 为每一个分组指示信息 分配一个时间点，在某个分组指示信息所对应的时间点到达时， 发送该分组指示信息。 上述发送时间信息可以通过一个专用于发送该信息的消息发送， 也可以通过以下 方式发送： 向分组指示信息指示的站点发送无线帧， 其中， 该无线帧中携带有发送时 间信息和分组指示信息。 在本实施例中， 上述无线帧可以包括但不限于广播 /组播帧。 需要说明的是， 在本实施例中， 当上述发送时间信息为发送时间偏移信息和上述 发送周期时， 通过分组指示信息的发送周期以及业务指示信息的时间偏移信息， 可以 确定业务指示信息的发送时刻 （该发送时刻即为在当前分组指示信息的发送周期内与 携带该分组指示信息的当前无线帧的偏移），可以通过上述分组指示信息和该发送时间 偏移信息通知站点其业务指示信息的发送位置。 在本实施例中， 上述发送时间偏移信息包括： 分组指示信息指示的站点中指定站 点所对应的业务指示信息在当前分组指示信息的发送周期内与上述无线帧的时间偏 移。 此时指定站点可以为分组指示信息指示的站点中的部分或全部。 在本实施例中， 上述分组指示信息可以包括但不限于： 分组指示信息指示的站点 的分段信息， 此时， 上述发送时间偏移信息还可以包括： 上述分组指示信息指示的多 个分段站点中的第一段站点的业务指示信息与携带该分组指示信息的无线帧的时间偏 移， 其中， 该第一段站点后的各个分段的站点所对应的业务指示信息依次排列在第一 段站点所对应的业务指示信息之后， 例如： 该分组指示信息指示的站点从前往后分为 三段： A段、 B段和 C段， 则可以将 A段站点的业务指示信息在当前分组指示信息的 发送周期内与无线帧的时间偏移作为上述发送时间偏移信息。 在本实施例中， 上述发送时间偏移信息可以通过以下之一方式携带在上述无线帧 中： 通过上述无线帧中的指定字段指示发送时间偏移信息； 通过分组指示信息隐式地 指示发送时间偏移信息。 其中， 对于第二种方式， 可以表现为以下实现形式： 上述分 组指示信息指示的站点根据分组指示信息中的分段信息， 和 /或分组指示信息次序计算 得到发送时间偏移信息， 由此也可以得知， 上述分组指示信息可以为多个， 无线帧中 可以携带有多个分组指示信息的次序信息， 其中， 上述次序信息可以表现但不限于以 下形式： 无线帧中携带的上述多个分组指示信息的顺序即为次序信息。 在本实施例中还提供了一种业务指示信息的发送处理装置， 该装置应用于无线局 域网的 AP， 用于实现上述实施例及优选实施方式， 已经进行过说明的不再赘述， 下面 对该装置中涉及到的模块进行说明。 如以下所使用的， 术语"模块"可以实现预定功能 的软件和 /或硬件的组合。 尽管以下实施例所描述的装置较佳地以软件来实现， 但是硬 件， 或者软件和硬件的组合的实现也是可能并被构想的。 图 3为根据本发明实施例 1 的业务指示信息的发送处理装置的结构框图。 如图 3所示， 该装置包括： 获取模块 30，连接至通知模块 32， 设置为获取无线局域网中站点的分组指示信息 的发送时间信息， 其中， 发送时间信息用于指示站点按照发送时间信息指示的发送时 刻接收分组指示信息指示的站点所对应的业务指示信息； 通知模块 32， 设置为向分组指示信息指示的站点通知发送时间信息。 通过上述各个模块所实现的功能， 同样可以实现对分组指示信息的发送的灵活配 置， 并且， 接收端的站点也可以根据该发送时间信息指示的发送时刻接收站点所对应 的业务指示信息， 可以快速获取业务指示信息， 并且， 提高了省电能力。 在本实施例中， 上述获取模块 30， 还可以设置为获取包括以下至少之一内容的发 送时间信息： 分组指示信息的发送周期、 该发送周期内业务指示信息的发送时间偏移 信息、 上述发送周期内业务指示信息的指定发送时刻， 其中， 上述发送周期用于指示 相邻的分组指示信息的时间间隔。 实施例 2 本实施例与实施例 1类似， 不同的是， 本实施例在站点侧进行说明。 本实施例提供一种业务指示信息的接收处理方法， 该方法应用于无线局域网的站 点， 如图 4所示， 该方法包括： 步骤 S402， 接收来自无线局域网中 AP的发送时间信息； 步骤 S404，按照上述发送时间信息指示的发送时刻接收上述分组指示信息指示的 站点所对应的业务指示信息。 在本实施例中， 上述发送时间信息包括但不限于： 分组指示信息的发送周期、 该 发送周期内业务指示信息的发送时间偏移信息、 上述发送周期内上述业务指示信息的 指定发送时刻， 其中， 上述发送周期用于指示相邻的分组指示信息的时间间隔。 在本实施例中， 上述发送周期还可以用于分组指示信息的接收， 即按照上述发送 周期接收上述分组指示信息， 其中， 不同分组指示信息所对应的上述发送周期可以相 同， 也可以不同， 并且， 该分组指示信息的接收方式可以不局限于本实施例中上述业 务指示信息的接收的场景下。 在本实施例中， 还提供一种业务指示信息的接收处理装置， 应用于无线局域网的 站点， 如图 5所示， 该装置包括： 第一接收模块 50，连接至第二接收模块 52， 设置为接收来自无线局域网中接入点 AP的发送时间信息； 第二接收模块 52， 设置为按照发送时间信息指示的发送时刻接收分组指示信息指 示的站点所对应的业务指示信息。 在本实施例的一个优选实施方式中， 上述第一接收模块 50， 设置为接收包括但不 限于以下内容的发送时间信息： 分组指示信息的发送周期、 发送周期内业务指示信息 的发送时间偏移信息、 该发送周期内业务指示信息的发送时间偏移信息、 上述发送周 期内上述业务指示信息的指定发送时刻， 其中， 上述发送周期用于指示相邻的分组指 示信息的时间间隔。 为了更好地理解上述实施例 1-2， 以下结合实施例 3-6和相关附图详细说明。 以下 实施例的主要设计思想在于：
AP周期发送系统消息无线帧，并在特定的系统消息无线帧中携带一个或多个分组 指示信息元素。上述分组指示信息元素中携带分组指示信息的发送周期信息和 /或在上 述分组指示信息发送周期内业务指示信息的发送时间偏移信息。 AP按照上述分组指示 信息中包含的部分或全部站点的业务指示信息在当前分组指示信息的发送周期内与 AP发送的系统消息无线帧的时间偏移，在相应的目标系统消息无线帧中向各分组站点 发送业务指示信息。 AP 可以在上述特定的系统消息无线帧中通过字段显示指示分组业务指示信息的 发送时间偏移信息。 站点接收到 AP发送的特定的系统消息无线帧后， 获得所在分组 对应的分组指示信息的发送周期信息和 /或上述分组业务指示信息的发送时间偏移信 息， 计算携带对应的业务指示信息的目标系统消息无线帧的目标发送时刻， 并在目标 发送时刻接收对应的业务指示信息。 AP 也可以用通过上述特定的系统消息无线帧中所携带的分组信息隐式地指示分 组业务指示信息的发送时间偏移信息。 AP通过上述系统消息无线帧中携带的分组指示 信息， 通知上述分组指示信息中包含的站点上述系统消息无线帧中分组指示信息个数 和分组指示信息次序。 站点接收到 AP发送的上述系统消息无线帧， 获得分组指示信 息以及分组指示信息个数和分组指示信息次序信息， 计算得到携带上述分组站点业务 指示信息的目标系统消息无线帧与接收到的 AP发送的上述特定系统消息无线帧的时 间偏移。 再根据上述计算得到的时间偏移信息计算携带对应的业务指示信息的目标系 统消息无线帧的目标发送时刻， 并在目标发送时刻接收对应的业务指示信息。 实施例 3 一个 BSS中有一个 AP及 6000个已关联的非接入站点 STAs， 在关联过程中， AP 为每一个 STA分配了 BSS内唯一的 AID。 站点的 AID空间可以进行分组处理， 即分 页分块 （page segment), 例如分为 4个页 （page), 每一页中有 32个块， 每个块中有 64个站点。 AP向站点广播发送 beacon信息， 并以 page segment为粒度携带业务指示 信息元素 TIM/DTIM, 即 TIM/DTIM中包含一个或多个 page segment中的站点的业务 指示信息。 处于节电模式的非接入站点周期醒来监听 beacon信息， 并检测 TIM/DTIM 中的业务指示比特图来判断 AP是否缓存有该站点的数据。 本实施例中， BSS下所有站点按页分为 4组， 即 pagel , page2, page3 , page4。 每一页站点对应一个分组指示信息元素 segment count IE,其中包含分组识别信息 page 索引 （page index), page索引对应的分组的分段数 （segment count) 等信息， 例如分 为两段 page segment (简称 PS)， 即 PS1， PS2。 一个 DTIM beacon中携带一个或多个 分组的 segment count IE, 每个分组的 segment count IE携带上述 age index, segment count等信息， 同时还包含该分组对应的分组指示信息元素 segment count IE的发送周 期信息 （DTIM interval) 和在当前发送周期内的分组业务指示信息的发送时间偏移信 息（TIM offset)。非接入站点在收到包含其所在分组的 segment count IE的 DTIM beacon 后， 获得发送周期信息 DTIM interval和发送时间偏移信息 （TIM offset)。 本实施例中，当前 DTIM beacon中携带了分组 pagel与分组 page2的 segment count
IE。 其中 pagel对应的 segment count IE指示 pagel分为 2个分段 page segment, 简称 为 PlSl和 PlS2oPage2对应的 segment count IE指示 age2分为 2个分段 age segment, 简称为 P2S1和 P2S2。非接入站点 STA1和 STA2分别属于 PlSl和 P2S1。 STA1 根据 Pagel对应的 segment count IE携带的分组指示信息的发送周期信息 DTIM interval和在 当前发送周期内分组业务指示信息的发送时间偏移信息（TIM offset), 获得携带 pagel segment count IE的 DTIM周期， 并获知携带其单播业务指示信息的 TIM相对于上述 DTIM的时间偏移。例如, pagel的 segment count IE指示 DTIM Interval为 2，表示 pagel 的 segment count IE以 2个 DTIM beacon为周期进行发送； TIM Offset为 0，表示 PlSl 对应的 TIM为当前的 DTIM， PlSl对应的 TIM为当前的 DTIM向后偏移 1个 beacon 中的 TIM。 Page2的 segment count IE指示 DTIM Interval为 1， 表示 page2 的 segment count IE以 1个 DTIM beacon为周期进行发送； TIM Offset为 2，表示 P2S1对应的 TIM 为当前的 DTIM向后偏移 2个 beacon中的 TIM, P2S2对应的 TIM为当前的 DTIM向 后偏移 3个 beacon中的 TIM。
STA1接收到 AP发送的 DTIM beacon后， 根据 segment count IE中的 page index 及 segment count信息确认是否为自己所在分组的 segment count IE以及自己所属的分 段 page segment。如果是， 则进一步根据 agel 的 segment count IE中的 DTIM Interval 及 TIM Offset获得 pagel 的 segment count IE发送周期以及 PI SI在当前发送周期内的 TIM 偏移信息。 从而获得携带对应的业务指示信息 TIM 在当前发送周期内的目标 beacon的目标发送时刻（Target Beacon Transmission Time,简称为 TBTT)，并在该 TBTT 时刻接收 beacon获取对应的业务指示信息 TIM。 如图 6所示。 实施例 4 和实施例 3 类似， 不同的是， AP 通过隐式的方式为分组站点指示其所在 TIM segment的位置。 AP在 DTIM beacon携带的 segment count IE中携带上述 age index, segment count, 发送周期等信息。 站点即可根据上述信息获知 segment count IE所指示 的页 page,及该页的分段个数 count 当 DTIM beacon中携带有一个以上 segment count IE时， 第一个 segment count IE指示的页为 pagel , 分段数为 SegmentCountl , 其所指 示的第一个分段， 记为 P1S1， 所对应的 TIM segment即为当前的 DTIM。 后续分段所 对应的 TIM segment依次对应后续 beacon中的 TIM。 第二个 segment count IE指示的 页为 page2， 分段数为 SegmentCount2， 所指示的第一个分段， 记为 P2S1， 所对应的 TIM segment即为当前的 DTIM偏移 SegmentCountl个 beacon所对应的 TIM。 其后续 的分段所对应的 TIM segment依次对应后续 beacon中的 TIM。 本例中 SegmentCountl 取值为 2。
STA1接收到 AP发送的 DTIM beacon后， 根据 segment count IE中的 page index 及 segment count信息确认是否为自己所在分组的 segment count IE 以及自己所属的 page segment 如果是， 则进一步根据 pagel 的 segment count IE中的 DTIM Interval 获得 pagel 的 segment count IE发送周期， 确定自己所对应的下一个 segment count IE 的目标 DTIM beacon的发送时刻 TBTT。 本例中 DTIM interval为 2， 即每两个 DTIM beacon为一个周期。 同时根据当前 DTIM beacon中携带的 segment count IE的数量以 及自己所在 page对应的 segment count IE的相对次序，计算得到自己所属 page segment 对应的 TIM segment在当前发送周期内的发送时间偏移信息， 从而获得携带对应的业 务指示信息 TIM的目标 beacon的目标发送时刻 ΤΒΤΤ,并在该 TBTT时刻接收 beacon 获取对应的业务指示信息 TIM。本实施例中，当前 DTIM beacon中携带了两个 segment count IE, 其中 STA1所对应的 segment count IE为第二个， 且属于该页中的第二个分 段 page segment, 取值为 2， 记为 P2S2。 其中第一个 segment count IE指示该页包含两 个分段， 因此 STA1 所对应的 TIM segment 与当前 DTIM 的时间偏移量为 SegmentCountl + page segment- 1 , 即 3个 beacon, 即为 DTIM beacon后的第 3个 TIM beacon。 如图 6所示。 实施例 5 和实施例 4类似， AP通过隐式的方式为分组站点指示其所在 TIM segment的位置。 当 DTIM beacon中携带有一个以上 segment count IE时， 第一个 segment count IE指示 的页为 pagel , 其所指示的第一个分段， 记为 P1S1， 所对应的 TIM segment即为当前 的 DTIM。 后续分段所对应的 TIM segment依次对应后续 beacon中的 TIM。 第二个 segment count IE指示的页为 page2， 所指示的第一个分段， 记为 P2S1， 所对应的 TIM segment亦为当前的 DTIM。 后续的分段所对应的 TIM segment依次对应后续 beacon 中的 TIM。 如图 7所示。
STA1接收到 AP发送的 DTIM beacon后， 根据 segment count IE中的 page index 信息确认是否为自己所在分组的 segment count IE以及自己所属的 page segment。 如果 是，则进一步根据 pagel的 segment count IE中的 DTIM Interval获得 pagel 的 segment count IE发送周期，确定自己所对应的下一个 segment count IE的目标 DTIM beacon的 发送时刻 TBTT。 同时根据自己的所属的分段 page segment, 确定自己对应的 TIM segment与当前 DTIM 的时间偏移量。从而获得携带对应的业务指示信息 TIM在当前 发送周期内的目标 beacon的目标发送时刻 TBTT，并在该 TBTT时刻接收 beacon获取 对应的业务指示信息 TIM。 本例中 STA1属于第二页第二个分段， 记为 P2S2， 其所对 应的 TIM segment与当前 DTIM的时间偏移量为 1个 beacon, 即为 DTIM beacon后的 第一个 TIM beacon。 如图 7所示。 实施例 6 和实施例 3类似，当前 DTIM beacon中携带了分组 pagel与分组 page2的 segment count IE。 其中 agel对应的 segment count IE指 agel分为 2个分段 age segment, 简称为 P1S1和 P1S2。 Page2对应的 segment count IE指示 page2分为 2个分段 age segment, 简称为 P2S1和 P2S2。 非接入站点 STA1和 STA2分别属于 P1S1 禾 B P2S1。 STA1 根据 Pagel对应的 segment count IE携带的分组指示信息的发送周期信息 DTIM interval和在当前发送周期内分组业务指示信息的发送时间偏移信息 （TIM offset), 获 得携带 pagel segment count IE的 DTIM 周期，并获知携带其单播业务指示信息的 TIM 相对于上述 DTIM的时间偏移。 例如， agel 的 segment count IE指示 DTIM Interval 为 2，表示 pagel 的 segment count IE以 2个 DTIM beacon为周期进行发送； TIM Offset 为 0， 表示 P1S1对应的 TIM为当前的 DTIM， P1S1对应的 TIM为当前的 DTIM向后 偏移 1个 beacon中的 TIM。 Page2的 segment count IE指示 DTIM Interval为 1， 表示 page2 的 segment count IE以 1个 DTIM beacon为周期进行发送； TIM Offset为 1， 表 示 P2S1对应的 TIM为当前的 DTIM向后偏移 1个 beacon中的 TIM,P2S2对应的 TIM 为当前的 DTIM向后偏移 2个 beacon中的 TIM。 如图 8所示。 在另外一个实施例中， 还提供了一种软件， 该软件用于执行上述实施例及优选实 施方式中描述的技术方案。 在另外一个实施例中， 还提供了一种存储介质， 该存储介质中存储有上述软件， 该存储介质包括但不限于： 光盘、 软盘、 硬盘、 可擦写存储器等。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多个计算装置所 组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码来实现， 从而， 可以 将它们存储在存储装置中由计算装置来执行， 并且在某些情况下， 可以以不同于此处 的顺序执行所示出或描述的步骤， 或者将它们分别制作成各个集成电路模块， 或者将 它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样， 本发明不限制于任 何特定的硬件和软件结合。 以上仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技术人 员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内， 所作的任何 修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。 工业实用性 本发明提供的上述技术方案， 可以应用于业务指示信息的发送处理和接收处理过 程中， 采用向站点通知用于指示所述站点按照所述发送时间信息指示的发送时刻接收 所述分组指示信息指示的站点所对应的业务指示信息的发送时间信息的方式， 解决了 相关技术中， 尚无对业务指示信息的发送进行灵活配置以及需要对每个无线帧进行监 测等技术问题， 从而实现了对业务指示信息 （例如分组用户寻呼信息） 的灵活配置发 送及快速获取。

Claims

权 利 要 求 书
1. 一种业务指示信息的发送处理方法， 应用于无线局域网的接入点 AP， 包括： 获取所述无线局域网中站点的分组指示信息的发送时间信息， 其中， 所述 发送时间信息用于指示所述站点按照所述发送时间信息指示的发送时刻接收所 述分组指示信息指示的站点所对应的业务指示信息；
向所述分组指示信息指示的站点通知所述发送时间信息。
2. 根据权利要求 1所述的方法， 其中， 所述发送时间信息包括以下至少之一： 所述分组指示信息的发送周期、 所述发送周期内业务指示信息的发送时间 偏移信息、 所述发送周期内业务指示信息的指定发送时刻， 其中， 所述发送周 期用于指示相邻的所述分组指示信息的时间间隔。
3. 根据权利要求 2所述的方法， 其中， 向所述分组指示信息指示的站点通知所述 发送时间信息包括：
向所述分组指示信息指示的站点发送无线帧， 其中， 所述无线帧中携带有 所述发送时间信息和所述分组指示信息。
4. 根据权利要求 3所述的方法， 其中， 所述发送时间偏移信息包括：
所述分组指示信息指示的站点中指定站点所对应的业务指示信息在当前分 组指示信息的发送周期内与所述无线帧的时间偏移。
5. 根据权利要求 4所述的方法， 其中， 所述指定站点包括： 所述分组指示信息指示的多个分段站点中第一段站点， 其中， 该第一段站 点后的各个分段的站点所对应的业务指示信息依次排列在所述第一段站点所对 应的业务指示信息之后。
6. 根据权利要求 3所述的方法， 其中， 所述发送时间偏移信息通过以下之一方式 携带在所述无线帧中：
通过指定字段指示所述发送时间偏移信息；
通过所述分组指示信息隐式地指示所述发送时间偏移信息。
7. 根据权利要求 6所述的方法， 其中， 通过所述分组指示信息隐式地指示所述发 送时间偏移信息， 包括：
所述分组指示信息指示的站点根据所述分组指示信息中的分段信息， 和 / 或分组指示信息次序计算得到所述发送时间偏移信息。
8. 一种业务指示信息的接收处理方法， 应用于无线局域网的站点， 包括：
接收来自所述无线局域网中接入点 AP的发送时间信息；
按照所述发送时间信息指示的发送时刻接收所述分组指示信息指示的站点 所对应的业务指示信息。
9. 根据权利要求 8所述的方法， 其中， 所述发送时间信息包括以下至少之一： 所述分组指示信息的发送周期、 所述发送周期内业务指示信息的发送时间 偏移信息、 所述发送周期内业务指示信息的指定发送时刻， 其中， 所述发送周 期用于指示相邻的所述分组指示信息的时间间隔。
10. 根据权利要求 9所述的方法， 其中， 还包括： 按照所述发送周期接收所述分组指示信息。
11. 一种业务指示信息的发送处理装置， 应用于无线局域网的接入点 AP， 包括： 获取模块， 用于获取所述无线局域网中站点的分组指示信息的发送时间信 息， 其中， 所述发送时间信息用于指示所述站点按照所述发送时间信息指示的 发送时刻接收所述分组指示信息指示的站点所对应的业务指示信息；
通知模块， 用于向所述分组指示信息指示的站点通知所述发送时间信息。
12. 根据权利要求 11所述的装置， 其中， 所述获取模块， 用于获取包括以下至少之 一内容的所述发送时间信息：
所述分组指示信息的发送周期、 所述发送周期内业务指示信息的发送时间 偏移信息、 所述发送周期内业务指示信息的指定发送时刻， 其中， 所述发送周 期用于指示相邻的所述分组指示信息的时间间隔。
13. 一种业务指示信息的接收处理装置， 应用于无线局域网的站点， 包括：
第一接收模块， 用于接收来自所述无线局域网中接入点 AP的发送时间信 息； 第二接收模块， 用于按照所述发送时间信息指示的发送时刻接收所述分组 指示信息指示的站点所对应的业务指示信息。
14. 根据权利要求 13所述的装置， 其中， 所述第一接收模块， 用于接收包括以下至 少之一内容的所述发送时间信息：
所述分组指示信息的发送周期、 所述发送周期内业务指示信息的发送时间 偏移信息、 所述发送周期内业务指示信息的指定发送时刻， 其中， 所述发送周 期用于指示相邻的所述分组指示信息的时间间隔。
PCT/CN2014/071338 2013-03-08 2014-01-24 业务指示信息的发送处理、接收处理方法及装置 WO2014134988A1 (zh)

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