WO2016107315A1 - 调度指示信息的发送、接收方法及装置 - Google Patents

调度指示信息的发送、接收方法及装置 Download PDF

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Publication number
WO2016107315A1
WO2016107315A1 PCT/CN2015/094829 CN2015094829W WO2016107315A1 WO 2016107315 A1 WO2016107315 A1 WO 2016107315A1 CN 2015094829 W CN2015094829 W CN 2015094829W WO 2016107315 A1 WO2016107315 A1 WO 2016107315A1
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Prior art keywords
indication information
resource indication
resource
scheduling
downlink
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PCT/CN2015/094829
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English (en)
French (fr)
Inventor
姚珂
邢卫民
芮华
吕开颖
孙波
田开波
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中兴通讯股份有限公司
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Publication of WO2016107315A1 publication Critical patent/WO2016107315A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of communications, and in particular to a method and an apparatus for transmitting and receiving scheduling indication information.
  • the IEEE 802.11 group of the Institute of Electrical and Electronics Engineers has defined IEEE 802.11.
  • a series of standards such as a/b/g/n/ac meet the growing communication needs. These standards are mostly aimed at improving 802.11 technology to increase the maximum physical layer transmission rate or network maximum throughput.
  • the efficiency of WLAN networks will decline significantly. Simply increasing the rate does not solve the problem. Therefore, the working group established a related high efficiency WLAN (HEW) group dedicated to To solve the problem of WLAN network efficiency.
  • HEW high efficiency WLAN
  • the scheduling information is indicated in the information field (SIG field) of the physical frame header, as shown in FIG. 1 is a non-high (non-high throughput) of IEEE 802.11a.
  • the HT-mixed format expands the scheduling information.
  • the scheduling information is stored in the HT-SIG.
  • multiple input multiple output Multiple Input Multiple Output
  • the indication information related to MIMO such as whether it is a sounding frame (probe frame), the number of layers, etc., also adds an indication of new features of 802.11n, such as aggregation characteristics, space time block code (STBC) )Wait.
  • Figure 2 shows the physical frame structure of IEEE 802.11ac. Since the multi-user Multiple Input Multiple Output (MU-MIMO) technology is supported, the scheduling information is further expanded. Therefore, the frame format of 802.11ac is shown.
  • the Very High Throughput SIG (VHT-SIG) is divided into two parts, VHT-SIG-A and VHT-SIG-B, which carry different information.
  • 802.11ac is the same resource indication overhead for single-user and multi-user, and has different meanings for single-user and multi-user in some bit positions.
  • the traditional SIG domain (L-SIG), HT-SIG, and VHT-SIG-A are repeatedly transmitted in units of 20 MHz.
  • VHT-SIG-B is not directly transmitted in units of 20 MHz, but according to The supported bandwidth is different.
  • the bit content of the content that can be carried by 20 MHz is first repeated, and then the subsequent code modulation mapping processing is performed.
  • the traditional WLAN only supports full bandwidth scheduling users, but the actual application has a high proportion of small data packets, and the large bandwidth is very expensive to transmit small data packets; in addition, the frequency selective fading of large bandwidth is much higher than the small bandwidth probability, so the next A generation of WLAN technology will introduce Orthogonal Frequency Division Multiple Access (OFDMA) to implement small bandwidth transmission of small data packets and selection of partial bandwidth according to frequency selection results.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the OFDMA technology allocates frequency resources of the same period to multiple users, and needs to use scheduling information to indicate each user's Resources. Taking 5MHz resource allocation granularity as an example, up to 32 users will be supported at 160MHz. If all the user's scheduling information (also called scheduling indication information) is sent on the primary channel in the conventional manner and repeated on other secondary channels, the time will continue for a long time, which will cause a great waste of resources.
  • scheduling information also called scheduling indication information
  • an embodiment of the present invention provides a method and an apparatus for transmitting and receiving scheduling indication information.
  • a method for sending scheduling indication information including: sending scheduling indication information to a station participating in the current scheduling in a partially repeated manner, where the scheduling indication information includes: navigation information, downlink The resource indication information and/or the uplink resource indication information, where the partial repetition manner is used to indicate that only the navigation information is repeatedly sent on a frequency resource occupied by the predetermined scheduling indication information, and is repeatedly sent on the frequency resource.
  • the downlink resource indication information or the indication information of the part of the uplink resource indication information, or the downlink resource indication information or the uplink resource indication information is sent in the non-repetitive manner in the frequency resource, where the navigation information is used to indicate the site Corresponding scheduling indication information is located in a frame where the scheduling indication information is located.
  • the navigation information sent to the station is repeatedly sent in the frequency resource, including: transmitting the navigation information on a primary 20 MHz channel; and non-high throughput on other 20 MHz subchannels.
  • the HT repeats the manner of transmitting the navigation information, wherein the other 20 MHz subchannel is a subchannel other than the main 20 MHz channel on the frequency resource occupied by the predetermined scheduling indication information.
  • the other 20 MHz subchannels are subchannels with continuous bandwidth or discontinuous bandwidth.
  • the method further includes: in the resource location indicated by the downlink resource indication information, a manner indicated by the following resource indication information
  • the station sends the downlink data; and/or receives the uplink data sent by the station in the manner indicated in the foregoing resource indication information on the resource location indicated by the uplink resource indication information.
  • the downlink resource indication information and the uplink resource indication information of the station occupy the same frequency band as the data sent by the station or the received data.
  • the downlink resource indication information and/or the uplink resource indication are sent by the MU-MIMO mode when the MU-MIMO shared frequency band resource is allocated in the multi-user multiple input multiple output mode. information.
  • the downlink channel is specified in the downlink channel other than the same bandwidth.
  • the user selects the unoccupied frequency resource to send the downlink resource indication information and/or the uplink resource indication information.
  • the method further includes: failing to obtain the allocation to the site according to the scheduling indication information
  • the time length corresponding to the downlink resource indication information and/or the uplink resource indication information is extended; and the frequency position of the downlink resource indication information and/or the uplink resource indication information of the station is determined according to the extended duration.
  • the time-frequency resource in the idle state is filled in at least one of the following: the downlink resource indication information and And when the uplink resource indicates that the information resource is extended, the downlink resource indication information and/or the uplink resource indication information before the time-frequency resource in the idle state is filled with the time-frequency resource of the idle state; The indication information and/or the uplink resource indication information is populated into the time-frequency resource of the idle state.
  • the method further includes: the downlink resource indication information and/or the uplink resource indication information are encapsulated in a medium access control MAC frame, or the downlink resource indication information and/or the uplink resource indication information The encapsulation is carried in the signal SIG field of the physical frame header.
  • a method for receiving scheduling indication information including: resolving scheduling indication information that is sent by the access point in a partially repeated manner, where the scheduling indication information includes: navigation information, The downlink resource indication information and/or the uplink resource indication information, where the partial repetition manner is used to indicate that only the navigation information is repeatedly sent on a frequency resource occupied by the predetermined scheduling indication information, and is repeated on the frequency resource.
  • the method further includes: at a resource location indicated by the downlink resource indication information, Receiving the downlink data sent by the access point in the manner indicated in the following row resource indication information; and/or, in the resource location indicated by the uplink resource indication information, the manner indicated in the foregoing resource indication information is sent to the access Point to send upstream data.
  • a sending apparatus for scheduling indication information is further applied to an access point, including: a first sending module, configured to send scheduling indication information in a partially repeated manner to a station participating in the current scheduling
  • the scheduling indication information includes: navigation information, downlink resource indication information, and/or uplink resource indication information, where the partial repetition manner is used to indicate that only the navigation information is occupied by the predetermined scheduling indication information. Repeating the transmission on the resource, and repeatedly transmitting the downlink resource indication information or the indication information of the part of the uplink resource indication information on the frequency resource, or sending the downlink resource indication information or the uplink in the non-repetitive manner on the frequency resource.
  • the resource indication information is used to indicate the location of the scheduling indication information corresponding to the station in the frame where the scheduling indication information is located.
  • the first sending module is configured to send the navigation information on a primary 20 MHz channel; and send the navigation information in a non-high throughput non-HT repetition manner on other 20 MHz subchannels,
  • the other 20 MHz subchannel is a subchannel other than the main 20 MHz channel on the frequency resource occupied by the predetermined scheduling indication information.
  • the device further includes: a second sending module, configured to be in the downlink resource indication At the resource location indicated by the information, the downlink data is sent to the site in the manner indicated in the following resource indication information; and/or the receiving module is configured to set the resource indication information on the resource location indicated by the uplink resource indication information.
  • the manner indicated in the middle receives the uplink data sent by the station.
  • the apparatus further includes: an extension module, configured to extend the downlink resource indication information and/or the uplink resource when the station fails to obtain the allocated frequency resource according to the scheduling indication information. And a determining module, configured to determine, according to the extended duration, a frequency location of the downlink resource indication information and/or the uplink resource indication information of the station.
  • the device further includes: a filling module, configured to fill the time-frequency resource of the idle state when there is an idle-time time-frequency resource in the time-frequency resource that sends the scheduling indication information, where The filling module is configured to fill the idle resource indication information and/or the uplink resource indication information before the time-frequency resource in the idle state with the idle state when the downlink resource indication information and/or the uplink resource indication information resource is extended.
  • the time-frequency resource; and the downlink resource indication information and/or the uplink resource indication information of the designated station are filled into the time-frequency resource of the idle state.
  • a receiving apparatus for scheduling indication information which is applied to a station, and includes: a parsing module, configured to parse scheduling indication information that is sent by the access point in a partially repeated manner, where
  • the scheduling indication information includes: navigation information, downlink resource indication information, and/or uplink resource indication information, where the partial repetition manner is used to indicate that only the navigation information is repeatedly sent on a frequency resource occupied by the predetermined scheduling indication information.
  • the navigation information is used to indicate the location of the scheduling indication information corresponding to the station in the frame where the scheduling indication information is located; the first receiving module is configured to receive the downlink resource indication according to the frequency resource location indicated by the navigation information.
  • Information and/or uplink resource indication information are used to indicate the location of the scheduling indication information corresponding to the station in the frame where the scheduling indication information is located;
  • the device further includes: a second receiving module, configured to receive, at a resource location indicated by the downlink resource indication information, a manner that is received by the access point in the manner indicated by the downlink resource indication information The downlink data; and/or the sending module is configured to send, to the resource location indicated by the uplink resource indication information, uplink data to the access point in a manner indicated by the uplink resource indication information.
  • a second receiving module configured to receive, at a resource location indicated by the downlink resource indication information, a manner that is received by the access point in the manner indicated by the downlink resource indication information The downlink data
  • the sending module is configured to send, to the resource location indicated by the uplink resource indication information, uplink data to the access point in a manner indicated by the uplink resource indication information.
  • the navigation information is sent in a completely repeated transmission manner on the frequency resource occupied by the predetermined scheduling indication information, and the downlink resource indication information or the uplink resource indication information is in the predetermined scheduling indication.
  • the frequency resource occupied by the information is a technical solution in a non-repetitive manner or a partially repeated manner, which solves the problem that the duration of the user's scheduling information on the primary subchannel is completely repeated on the secondary subchannel, and the resource is wasted.
  • the problem is that there is no user confusion when the number of users is large, and the advantage of high resource utilization is obtained.
  • FIG. 1 is a schematic diagram of an HT-mixed physical frame format of non-HT and 802.11n of 802.11a in the related art
  • FIG. 2 is a schematic diagram of a physical frame structure of an 802.11ac in the related art
  • FIG. 3 is a flowchart of a method for transmitting scheduling indication information according to an embodiment of the present invention
  • FIG. 4 is a structural block diagram of an apparatus for transmitting scheduling indication information according to an embodiment of the present invention.
  • FIG. 5 is a block diagram showing still another structure of a device for transmitting scheduling indication information according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of a method for receiving scheduling indication information according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of a receiving apparatus for scheduling indication information according to an embodiment of the present invention.
  • FIG. 8 is a block diagram showing still another structure of a receiving apparatus for scheduling indication information according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a scheduling frame format in which each station is independently encapsulated into one MAC frame according to a preferred embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a scheduling frame format of a non-contiguous bandwidth in which each station is independently encapsulated into one MAC frame according to a preferred embodiment 2 of the present invention
  • FIG. 11 is a schematic diagram of a priority manner of load resource allocation according to a preferred embodiment 3 of the present invention.
  • FIG. 12 is a schematic diagram of physical frame header transmission resource indication information according to a preferred embodiment 4 of the present invention.
  • FIG. 13 is a schematic diagram of MAC frames of different lengths to be complemented according to a preferred embodiment 5 of the present invention.
  • FIG. 3 is a flowchart of a method for sending scheduling indication information according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:
  • Step S302 determining a site participating in the current scheduling
  • Step S304 the scheduling indication information is sent to the station participating in the current scheduling in a partial repetition manner, where the scheduling indication information includes: navigation information, downlink resource indication information, and/or uplink resource indication information, and the partial repetition manner is used to indicate only
  • the navigation information is repeatedly sent on the frequency resource occupied by the predetermined scheduling indication information, and the downlink resource indication information or the indication information of the part of the uplink resource indication information is repeatedly sent on the frequency resource, or in the frequency resource.
  • the non-repetitive transmission mode is used to send the downlink resource indication information or the uplink resource indication information, where the navigation information is used to indicate the location of the scheduling indication information corresponding to the site in the frame where the scheduling indication information is located.
  • the frequency resource is a technical solution in a non-repetitive manner or a partial repetition mode, which solves the problem of long duration and waste of resources caused by completely repeating the transmission of all user scheduling information on the primary subchannel on the secondary subchannel in the related art.
  • the above non-repetitive manner can be understood as a transmission method that prohibits transmission in a repeated manner, and is a transmission method that does not adopt a repeated transmission manner.
  • the navigation information sent to the station is repeatedly transmitted in the frequency resource, and may be implemented by: transmitting the navigation information on a primary 20 MHz channel; non-high throughput on other 20 MHz subchannels. Transmitting the navigation information in an HT repeating manner, wherein the other 20 MHz subchannel is a subchannel other than the main 20 MHz channel on the frequency resource occupied by the predetermined scheduling indication information, that is, because navigation information is used Instructing the location of the scheduling indication information corresponding to the foregoing station in the frame in which the scheduling indication information is located, in the primary subchannel (corresponding to the primary 20 MHz channel of the foregoing embodiment) and the secondary subchannel (corresponding to the 20 MHz subchannel of the above embodiment) If the navigation information needs to be sent, the above-mentioned navigation information is sent in a repeated manner on the frequency resource occupied by the access point, which refers to the frequency at which the access point sends navigation information on the primary channel (main 20 MHz) and is occupied by the access point.
  • the access point refers
  • the scheduling information in the related art does not support the transmission on the non-contiguous bandwidth, and the non-contiguous bandwidth occupied by the scheduling information should include the bandwidth allocated by the subsequent frame.
  • the other 20 MHz provided by the embodiment of the present invention The subchannel is a subchannel with continuous bandwidth or discontinuous bandwidth, that is, any 20MHz subchannel other than the main 20MHz channel is allowed to not participate in the transmission.
  • the following technical solution is further performed: in the resource location indicated by the downlink resource indication information, the manner indicated in the following resource indication information Sending the downlink data to the foregoing station; and/or receiving the uplink data sent by the station in the manner indicated in the foregoing resource indication information on the resource location indicated by the foregoing uplink resource indication information.
  • the downlink is performed.
  • the resource indication information and the uplink resource indication information occupy the same frequency band as the above-mentioned station sending data or receiving data.
  • the scheduling information occupies MU-MIMO or occupies other idle resources. For example, some users allocate a large bandwidth of 40M or 80M, the scheduling information only uses 20M, and the rest is idle.
  • the embodiment of the present invention further provides a technical solution: when the different stations are scheduled to the same bandwidth, and the MU-MIMO shares the frequency band resources, the downlink resource indication information and/or the uplink is sent by using the MU-MIMO mode. Resource indication information.
  • the unoccupied frequency is selected for the designated user in the downlink channel other than the same bandwidth.
  • the resource sends the downlink resource indication information and/or the uplink resource indication information. That is, if the subsequent data is scheduled to the same 20MHz subchannel, and the downlink/uplink resource indication information of different sites of the OFDMA shared resource is performed at a smaller granularity, the access point is based on the downlink channel idle condition of the scheduled station.
  • the multiplexed user selects other unoccupied resource transmissions on the frequency resources occupied by the access point.
  • the embodiment of the present invention further provides the following technical solution: when the foregoing station fails to obtain the allocated frequency resource according to the scheduling indication information, the length of time corresponding to the downlink resource indication information and/or the uplink resource indication information is extended; The duration determines a frequency location at which the downlink resource indication information and/or the uplink resource indication information of the foregoing station are allocated.
  • the time-frequency resource in the idle state is filled in at least one of the following: the downlink resource indication information and/or the uplink resource indication information.
  • the downlink resource indication information and/or the uplink resource indication information before the time-frequency resource in the idle state is filled with the time-frequency resource of the idle state; and the downlink resource indication information and/or the uplink resource indication of the designated station is used.
  • the information is filled into the time-frequency resources of the above idle state.
  • the foregoing downlink resource indication information and/or the uplink resource indication information are encapsulated in a medium access control MAC frame, or the downlink resource indication information and/or the uplink resource indication information is encapsulated as an information block carried in a physical frame header. Signal in the SIG field.
  • FIG. 4 is a structural block diagram of an apparatus for transmitting scheduling indication information according to an embodiment of the present invention. As shown in Figure 4, the device comprises:
  • the first determining module 40 is configured to determine a site participating in the current scheduling
  • the first sending module 42 is connected to the determining module 40, and is configured to send the scheduling indication information to the station participating in the current scheduling in a partial repetition manner, where the scheduling indication information includes: navigation information, downlink resource indication information, and/or uplink resources.
  • the partial repetition mode is used to indicate that only the navigation information is repeatedly transmitted on the frequency resource occupied by the predetermined scheduling indication information, and the downlink resource indication information or the uplink resource indication information is repeatedly sent on the frequency resource.
  • the indication information, or the downlink resource indication information or the uplink resource indication information is sent in a non-repetitive manner on the frequency resource, where the navigation information is used to indicate the location of the scheduling indication information corresponding to the station in the frame where the scheduling indication information is located.
  • the navigation information is sent in a completely repeated transmission manner on the frequency resource occupied by the predetermined scheduling indication information, and the downlink resource indication information or the uplink resource indication information is in the predetermined scheduling indication.
  • the frequency resource occupied by the information is in a non-repetitive manner or a partially repeated manner, and solves the continuation caused by completely repeating the transmission of all user scheduling information on the primary subchannel on the secondary subchannel in the related art.
  • the problem of long distance and waste of resources is that there is no user confusion when the number of users is large, and the resource utilization rate is high.
  • the first sending module 42 is configured to transmit the navigation information on a primary 20 MHz channel; and transmit the navigation information in a non-high throughput non-HT repetition manner on other 20 MHz subchannels, wherein the other 20 MHz sub- The channel is a subchannel other than the main 20 MHz channel on the frequency resource occupied by the predetermined scheduling indication information.
  • the apparatus further includes: a second sending module 44, configured to send downlink data to the site in a manner indicated in the following resource indication information at a resource location indicated by the downlink resource indication information; and/or
  • the receiving module 46 is configured to receive the uplink data sent by the station in the manner indicated in the uplink resource indication information at the resource location indicated by the uplink resource indication information.
  • the foregoing apparatus when the foregoing site fails to obtain the allocated frequency resource according to the scheduling indication information, the foregoing apparatus further includes: an extension module 48, configured to: when the site fails to obtain the allocated frequency resource according to the scheduling indication information, And the length of time corresponding to the downlink resource indication information and/or the uplink resource indication information is extended; the second determining module 50 is configured to determine, according to the extended duration, a frequency of allocation of the downlink resource indication information and/or the uplink resource indication information of the site. position.
  • an extension module 48 configured to: when the site fails to obtain the allocated frequency resource according to the scheduling indication information, And the length of time corresponding to the downlink resource indication information and/or the uplink resource indication information is extended; the second determining module 50 is configured to determine, according to the extended duration, a frequency of allocation of the downlink resource indication information and/or the uplink resource indication information of the site. position.
  • the device further includes: a filling module 52, configured to fill the time-frequency resource of the idle state when the time-frequency resource of the idle state exists in the time-frequency resource that sends the scheduling indication information, and the filling module And the downlink resource indication information and/or the uplink resource indication information before the time-frequency resource in the idle state is filled with the time-frequency resource in the idle state, when the duration of the downlink resource indication information and/or the uplink resource indication information resource is extended; And filling the downlink resource indication information and/or the uplink resource indication information of the designated site into the time-frequency resource of the idle state.
  • a filling module 52 configured to fill the time-frequency resource of the idle state when the time-frequency resource of the idle state exists in the time-frequency resource that sends the scheduling indication information
  • the filling module And the downlink resource indication information and/or the uplink resource indication information before the time-frequency resource in the idle state is filled with the time-frequency resource in the idle state, when the duration of the downlink resource indication information and/or the uplink
  • the access point before the resource indication information is sent, the access point needs to obtain a channel access opportunity, and determines the user to be scheduled and each user according to the scheduling algorithm in the prior art.
  • the resource allocation scheme, the present invention by using the following example, the access point is the execution entity in the foregoing scheduling indication information scheme, and the transmission scheme of the foregoing scheduling indication information is briefly described:
  • the access point occupies a frequency resource that is not less than the frequency allocated by all the stations in the current scheduling, and sends the scheduling indication information in a partially repeated manner, where the scheduling indication information includes navigation information, downlink resource indication information, and/or uplink resource indication information, where the foregoing part is
  • the sending of the scheduling indication information in a repeated manner means that the navigation information is sent in a repeated manner on the frequency resource occupied by the access point, and the downlink/uplink resource indication information is non-repetitive or partially repeated on the frequency resource occupied by the access point. The way to send.
  • the access point sends the downlink data of the scheduled station in the manner indicated in the following resource indication information on the resource location indicated by the downlink resource indication information; the access point is at the resource location indicated by the uplink resource indication information,
  • the uplink data transmitted by each station of the current scheduling is received in the manner indicated by the line resource indication information, where the navigation information is used to indicate the location of the resource indication information of each station in the current frame.
  • the access point preferably places the downlink/uplink resource indication information of the site on the same frequency band as the subsequent data occupation frequency band, and arranges the downlink/uplink resource indication information of a certain site if the bandwidth equal to the data occupied frequency band is already Occupied, preferably other resources that have not been occupied according to the downlink channel idle condition of the scheduled station, the subsequent number
  • the downlink/uplink resource indication information of different sites that are allocated to the same bandwidth in the MU-MIMO mode shared resource may be transmitted in the MU-MIMO manner.
  • the duration of the downlink/uplink resource indication information is extended, and then the transmission is performed on the frequency resource occupied by the access point in the new time in the foregoing manner. position.
  • the access point selects any of the following methods to fill the remaining resources:
  • the access point selects the downlink/uplink resource indication information of some important sites to be repeatedly filled to the remaining resources to occupy the idle resources.
  • one MAC frame may include downlink/uplink resource indication information to multiple sites, and further If the time domain of the MAC frame of different bandwidths is not the same, the non-longest MAC frame needs to be padded to the time domain length of the longest MAC frame.
  • the scheduling indication information sent by the access point can be used. Indicates that the subsequent data is an uplink scheduling, and may also be a scheduling indicating that the subsequent data is downlink, or a part of users may be downlink users.
  • FIG. 6 is a flowchart of a method for receiving scheduling indication information according to an embodiment of the present invention. As shown in 6, it includes the following steps:
  • Step S602 parsing the scheduling indication information that is sent by the access point in a partially repeated manner, where the scheduling indication information includes: navigation information, downlink resource indication information, and/or uplink resource indication information, where the partial repetition manner is used to indicate that only the navigation information is Repeatedly transmitting the frequency resource occupied by the foregoing scheduling indication information, and repeatedly transmitting the downlink resource indication information or the indication information of the part of the uplink resource indication information on the frequency resource, or transmitting the information in the frequency resource in a non-repetitive manner.
  • the method is configured to send the downlink resource indication information or the uplink resource indication information, where the navigation information is used to indicate the location of the scheduling indication information corresponding to the foregoing site in the frame where the scheduling indication information is located;
  • Step S604 receiving the downlink resource indication information and/or the uplink resource indication information according to the frequency resource location indicated by the navigation information.
  • the scheduling indication information sent by the access point according to the following manner is: the navigation information is sent in a completely repeated transmission manner on the frequency resource occupied by the predetermined scheduling indication information, and the downlink resource indication information or the uplink is sent.
  • the resource indication information is in a non-repetitive manner or a partial repetition manner on the frequency resource occupied by the foregoing scheduling indication information, and the technical solution is adopted to solve all the problems in the related art that the secondary subchannel is completely repeatedly transmitted on the secondary subchannel.
  • the problem caused by the user scheduling information is long, and the resource is wasted. When the number of users is large, user confusion does not occur, and the resource utilization rate is high.
  • a further improvement of the foregoing technical solution in the embodiment of the present invention is that, after performing step S604, The following technical solution: receiving the downlink data sent by the access point in the manner indicated in the following resource indication information on the resource location indicated by the downlink resource indication information; and/or on the resource location indicated by the uplink resource indication information, The uplink data is sent to the access point in the manner indicated in the foregoing resource indication information.
  • FIG. 7 is a structural block diagram of a receiving apparatus for scheduling indication information according to an embodiment of the present invention. As shown in Figure 7, the device includes:
  • the parsing module 70 is configured to parse the scheduling indication information that is sent by the access point in a partially repeated manner, where the scheduling indication information includes: navigation information, downlink resource indication information, and/or uplink resource indication information, where the partial repetition manner is used to indicate The navigation information is repeatedly transmitted on the frequency resource occupied by the foregoing scheduling indication information, and the downlink resource indication information or the indication information of the part of the uplink resource indication information is repeatedly transmitted on the frequency resource, or in the frequency resource.
  • the downlink resource indication information or the uplink resource indication information is sent in a non-repeating manner, where the navigation information is used to indicate the location of the scheduling indication information corresponding to the station in the frame where the scheduling indication information is located;
  • the first receiving module 72 is connected to the parsing module 70 and configured to receive the downlink resource indication information and/or the uplink resource indication information according to the frequency resource location indicated by the navigation information.
  • the receiving indication information that is sent by the access point according to the following manner: only the navigation information is sent in a completely repeated transmission manner on the frequency resource occupied by the predetermined scheduling indication information, and the downlink resource indication
  • the information or the uplink resource indication information is in a non-repetitive manner or a partial repetition manner on the frequency resource occupied by the foregoing scheduling indication information, and the technical solution is adopted to solve the related art, in which the primary subchannel is completely repeatedly transmitted on the secondary subchannel.
  • the duration of all user scheduling information is long, and the problem of wasted resources is that there is no user confusion when the number of users is large, and the resource utilization is high.
  • the foregoing apparatus further includes: a second receiving module 74, configured to receive, by using, the foregoing access point, in a manner indicated in the following resource indication information, at a resource location indicated by the downlink resource indication information The downlink data; and/or the sending module 76 is configured to send the uplink data to the access point in a manner indicated by the uplink resource indication information at the resource location indicated by the uplink resource indication information.
  • a second receiving module 74 configured to receive, by using, the foregoing access point, in a manner indicated in the following resource indication information, at a resource location indicated by the downlink resource indication information The downlink data
  • the sending module 76 is configured to send the uplink data to the access point in a manner indicated by the uplink resource indication information at the resource location indicated by the uplink resource indication information.
  • the frequency band supported by an access point refers to the inherent attributes of the device
  • the frequency band in which the AP works can be changed during boot configuration or work
  • the real-time monitoring of the AP obtains the available frequency band, and obtains the available frequency band of the AP according to the common communication adapter (CCA) detection and the rule of the wireless local area network EDCA;
  • CCA common communication adapter
  • the frequency band in which the AP schedules user data is determined according to a scheduling algorithm
  • the foregoing technical solution provided by the embodiment of the present invention has the advantages of high resource utilization rate and no user confusion, and has the effect that the indication overhead is small, and the actual application can be flexibly selected according to the scene characteristics.
  • the access point operates on the 160 MHz band, and the resource occupation opportunities obtained in each of the preferred embodiments are different.
  • the L-STF in FIG. 9 to FIG. 13 is a conventional short training. Short for Legacy-Short Training Format, L-LTF (Legacy-Long Training Format), HE-STF (HEW-Short Training Format), HE-LTF ( HEW-Long Training Format, a long training format for efficient WLAN).
  • the access point obtains a 160MHz continuous bandwidth access opportunity, as shown in Figure 9.
  • N 8 stations to be scheduled
  • the resource indication information of each station to be scheduled is separately encapsulated into one MAC control frame/management frame, and the resource indication information of multiple users is sent as the load of the physical layer frame.
  • the navigation information of the physical frame header gives a location indication of the resource indication information.
  • the navigation information transmits the location of the resource indication information of all stations on the primary channel 20 MHz, and the navigation information transmits the navigation information of the primary channel in a repeated manner on the remaining available bandwidth in the time domain.
  • the navigation information in FIG. 9 may also include a combination of the following: the symbol length of the navigation information (for example, 4 OFDM symbols), the number of stations scheduled this time (for example, N), and the list of site identifiers of the current scheduling ( For example, the identification list of stations 1 to N), the identifier associated with the access point (for example, a part of the ID (Identification) of the access point or the calculated or assigned value), the uplink or downlink scheduling, or the scheduling of the hybrid uplink and downlink ( For example, only downlink scheduling), the number of symbols of a long training sequence in a frame (for example, one).
  • the symbol length of the navigation information for example, 4 OFDM symbols
  • the number of stations scheduled this time for example, N
  • the list of site identifiers of the current scheduling For example, the identification list of stations 1 to N
  • the identifier associated with the access point for example, a part of the ID (Identification) of the access point or the calculated or assigned value
  • the uplink or downlink scheduling for example,
  • the resource indication information is encapsulated in the payload of the PHY protocol data unit (PPDU) as the content of the MAC control frame/management frame.
  • the information of all scheduled users is sequentially discharged in the resource indication information.
  • Table 1 a schematic diagram of encapsulation as a MAC layer control frame is given. There are a total of N sites, all of which are common to all sites.
  • the resource indication information and the independent resource indication information of each site are placed in blocks.
  • Table 1 shows the format of the MAC layer control frame of the multi-user resource indication information.
  • the resource indication information may also be encapsulated into a management frame format of the MAC layer, as shown in Table 2.
  • Table 2 shows the format of the MAC layer management frame of the multi-user resource indication information.
  • the corresponding sites 1 to N receive the corresponding downlink resource indication information.
  • the access point in the downlink resource indication information is sent by the access point to the corresponding site in the manner indicated by the downlink resource indication information, and the resource location indicated by the site 1 to N in the downlink resource indication information is indicated by the downlink resource indication information. Receive downlink data to yourself.
  • the corresponding sites 1 to N receive the corresponding uplink resource indication information.
  • the location of the resource indicated by the uplink resource indication information is sent to the access point in the manner indicated by the uplink resource indication information, and the resource location indicated by the access point in the uplink resource indication information is indicated by the uplink resource indication information.
  • the mode receives uplink data.
  • This embodiment differs from the first embodiment only in that the transmitted bandwidth is discontinuous. There are several 20MHz that are not filled with any information when the frame is transmitted, as the subchannel 7 in Fig. 10 is not filled. The other subchannels are the same as the location contents corresponding to the transmission on the full bandwidth of the first embodiment. It is worth noting that which subchannels are not available does not affect the availability of other subchannels, and it is not necessary to limit channelization in the conventional WLAN technology and must adopt 20/40/80/160MHz or 80+80MHz.
  • the access point obtains an access opportunity of 140 MHz discontinuous bandwidth, as shown in FIG.
  • the access point When arranging the resource indication information, the access point preferably places the resource indication information of the station on the same frequency band as the data occupied frequency band.
  • the SIFS is a resource indication information frame, and the SIFS is the resource distribution of each station scheduled.
  • the resource indication information of different stations that are allocated to the same bandwidth and shared by the MU-MIMO mode may be transmitted in a MU-MIMO manner.
  • a MU-MIMO manner For example, in FIG. 11, when the stations 5 and 6 share the subchannel 3 in the MU-MIMO manner, the resource indication information of the stations 5 and 6 is placed on the subchannel 3.
  • the funds of the stations 5 and 6 can be adopted in a form similar to the first embodiment.
  • the source indication information is encapsulated and sent to a MAC control frame or a management frame, and the resource indication information of the stations 5 and 6 may be respectively encapsulated into one MAC control frame or a management frame, and two independent MAC frames are sent in the MU-MIMO manner. .
  • the resource indication information of a certain station is arranged, the same bandwidth as the data occupied frequency band is already occupied, and other resources that are not occupied are preferably selected according to the downlink channel idle condition of the scheduled station.
  • the resource indication information of different stations of the same 20 MHz shared resource in the OFDMA mode is scheduled to be transmitted to the same 20 MHz, and the access point selects other unoccupied resources for the multiplexed user according to the downlink channel idle condition of the scheduled station. For example, in FIG.
  • the stations 7, 8, and 9 respectively occupy the frequency bands of 10 MHz, 5 MHz, and 5 MHz in the primary channel
  • the resource indication information of the stations 7, 8, and 9 are encapsulated and sent to a MAC control frame or a management frame, and may also be
  • the resource indication information of the stations 7, 8, and 9 are respectively encapsulated into a MAC control frame or a management frame in the resource indication information frame, and the resource indication information of the station 7 is sent in the primary channel at 20 MHz, and the MAC scheduling packets of the stations 8 and 9 are respectively. Then, they are transmitted on the subchannels 5 and 6, respectively.
  • the access point obtains an access opportunity of 120 MHz discontinuous bandwidth, as shown in FIG.
  • the access point makes the resource indication information of each station to be scheduled into a resource indication information block, and places it in the SIG information of the physical frame, and the navigation information of the physical frame header gives a location indication of the resource indication information. This mode indicates that the physical frame does not have a payload when the resource indicates information.
  • the access point When arranging the resource indication information, the access point preferably places the resource indication information of the station on the same frequency band as the data occupied frequency band. If the resource indication information of a certain station is arranged, the same bandwidth as the data occupied frequency band is already occupied, and other resources that are not occupied are preferably selected according to the downlink channel idle condition of the scheduled station.
  • the resource indication information of different stations of the same 20 MHz shared resource in the OFDMA mode is scheduled to be transmitted to the same 20 MHz, and the access point selects other unoccupied resources for the multiplexed user according to the downlink channel idle condition of the scheduled station.
  • the duration of the resource indication information is expanded.
  • the location is then found in different frequency bands in the new time in the manner described above. As shown in FIG. 10, a column in the SIG (a fixed length of the time domain) is not sufficiently allocated, a new column is expanded, and resource indication information of the stations 9, 10 is placed in a new column.
  • the access point selects any of the following methods to fill the remaining resources:
  • the resource indication information at the time before the same frequency band of the idle resource is repeated to occupy the idle resource. For example, the resource indication information of station 4 in FIG. 12 is repeated once in the second column.
  • the access point selects the resource indication information of some important sites to repeatedly fill the remaining resources to occupy the idle resources. For example, the resources of Site 9 and Site 5 in Figure 12 are repeatedly sent.
  • the access point obtains an access opportunity of 120 MHz discontinuous bandwidth.
  • the load part is a MAC frame on each subchannel, which includes resource indication information of different number of stations, so the load part is not aligned in the time domain. .
  • the entire bandwidth is required to be aligned, and the non-longest MAC packets are padded, with the longest pair. Qi.
  • the scheduling indication information sent by the access point may be used to indicate that the subsequent data is an uplink scheduling, or may be a scheduling indicating that the subsequent data is a downlink, or a part of the users may be an uplink user.
  • the resource indication information of the stations 1 to N shown in FIG. 10 may all be indication information that the subsequent frame is uplink, or may be all indication information of the downlink, or may be partially downlink.
  • a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • the embodiment of the present invention achieves the following technical effects: the utility model has the advantages of high resource utilization, no user confusion, and has the effect that the indication overhead is small, and the actual application can be flexibly selected according to the scene characteristics.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network 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 thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the navigation information is sent in a completely repeated transmission manner on the frequency resource occupied by the predetermined scheduling indication information, and the downlink resource indication information or the uplink resource indication information is in the predetermined manner.
  • the frequency resource occupied by the scheduling indication information is a technical solution in a non-repetitive manner or a partial repetition manner, which solves the long duration caused by completely repeating the transmission of all user scheduling information on the primary subchannel on the secondary subchannel in the related art.
  • the problem of waste of resources is that there is no user confusion when the number of users is large, and the advantage of high resource utilization is obtained.

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Abstract

本发明提供了一种调度指示信息的发送、接收方法及装置，其中，发送方法包括：向参与本次调度的站点以部分重复方式发送调度指示信息，其中调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，部分重复方式用于指示仅导航信息在预先确定的调度指示信息占用的频率资源上重复发送，以及在频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，导航信息用于指示站点对应的调度指示信息在调度指示信息所在帧中的位置。采用本发明提供的技术方案，解决了完全重复发送方式导致的持续时间长资源浪费的问题具有资源利用率高的优点。

Description

调度指示信息的发送、接收方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种调度指示信息的发送、接收方法及装置。
背景技术
目前，随着更多的人使用无线局域网(Wireless Local Access Network，简称为WLAN)进行数据通信，WLAN网络负载也在不断加重，电气和电子工程师协会工业规范IEEE802.11组，先后定义了IEEE 802.11a/b/g/n/ac等一系列标准来满足不断增长的通信需求，这些标准多是致力于改进802.11的技术以提高最大物理层传输速率或网络最大吞吐量。但是，随着用户数目的增多，WLAN网络的效率会出现明显下降的趋势，单纯提高速率并不能解决该问题，因此，工作组成立相关的高效无线局域网(High Efficiency WLAN，简称为HEW)小组致力于解决WLAN网络效率问题。
传统WLAN系统中调度信息是在物理帧头的信息域(Signal field，SIG域)中指示的，如图1所示是IEEE 802.11a的non-HT(non-High Throughput,非-高吞吐)和IEEE 802.11n的HT-mixed(HT混合的)物理帧格式，传统信息域(legacy SIG，简称为L-SIG)中承载non-HT的资源调度信息，主要内容是发送速率和发送长度。HT-mixed格式扩充了调度信息，除了L-SIG域存放调度信息外，在HT-SIG中也存放调度信息，除了发送速率和发送长度，还增加了多输入多输出(Multiple Input Multiple Output，简称为MIMO)相关的指示信息，如是否是sounding帧(探测帧)、层数等，还增加了802.11n的新特性的指示，如聚合特性、空时分组编码(Space Time Block Code，简称为STBC)等。图2所示是IEEE 802.11ac的物理帧结构，由于支持了下行多用户多入多出Multi-User Multiple Input Multiple Output，简称为MU-MIMO)技术，调度信息进一步扩充，因此802.11ac的帧格式非常高吞吐信息域(Very High Throughput SIG，简称为VHT-SIG)分成了两部分，VHT-SIG-A和VHT-SIG-B，分别承载不同的信息。802.11ac是单用户和多用户采用同样的资源指示开销，一些比特位置的单用户和多用户时具有不同的含义。
传统的SIG域(legacy signal，简称为L-SIG)、HT-SIG和VHT-SIG-A都是以20MHz为单位重复发送的，VHT-SIG-B不是直接以20MHz为单位重复发送，但是根据所支持的带宽不同，发送时先对20MHz能承载的内容进行比特内容重复，然后再做后续的编码调制映射处理。
传统WLAN只支持满带宽调度用户，而实际应用中小数据包的比例很高，而用大带宽发送小数据包的开销很大；另外大带宽的频率选择性衰落比小带宽概率高很多，因此下一代WLAN技术将引入正交频分多址接入(Orthogonal Frequency Division Multiple Access，简称为OFDMA)的方式来实现小带宽发送小数据包和根据频选结果选择部分带宽的需求。
OFDMA技术将同一段时间的频率资源分配给多个用户，需要用调度信息指示各个用户的 资源。以5MHz的资源分配粒度为例，160MHz上最多将支持32个用户。如果按照传统方式在主信道上发送所有的用户的调度信息(又称调度指示信息)，在其他辅信道上重复，时间上会持续很长，会造成很大的资源浪费。
针对相关技术中，辅子信道上完全重复发送主子信道上的所有用户调度信息而导致的持续时间长，资源浪费的问题，尚未提出有效的解决方案。
发明内容
为了解决上述技术问题，本发明实施例提供了一种调度指示信息的发送、接收方法及装置。
根据本发明的一个实施例，提供了一种调度指示信息的发送方法，包括：向参与本次调度的站点以部分重复方式发送调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置。
在本发明实施例中，向所述站点发送的所述导航信息在所述频率资源中重复发送，包括：在主20MHz信道上发送所述导航信息；在其他20MHz子信道上以非高吞吐non-HT重复的方式发送所述导航信息，其中，所述其他20MHz子信道为所述预先确定的所述调度指示信息占用的频率资源上除主20MHz信道外的子信道。
在本发明实施例中，所述其他20MHz子信道为带宽连续或者带宽非连续的子信道。
在本发明实施例中，向参与本次调度的站点以部分重复方式发送调度指示信息之后，还包括：在所述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式向所述站点发送下行数据；和/或在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式接收所述站点发送的上行数据。
在本发明实施例中，所述站点的下行资源指示信息和上行资源指示信息，与所述站点发送数据或接收数据均占用相同的频带。
在本发明实施例中，在不同站点调度到相同带宽，并以多用户多入多出方式MU-MIMO共享频带资源时，通过MU-MIMO方式发送所述下行资源指示信息和/或上行资源指示信息。
在本发明实施例中，在不同站点调度到相同带宽，且该相同带宽未能容纳所有站点的下行资源指示信息和/或上行资源指示信息时，在所述相同带宽以外的下行信道中为指定用户选择未被占用的频率资源发送所述下行资源指示信息和/或上行资源指示信息。
在本发明实施例中，所述方法还包括：在所述站点根据调度指示信息未能获取到分配到 的频率资源时，延长所述下行资源指示信息和/或上行资源指示信息对应的时长；根据延长后的时长确定所述站点的下行资源指示信息和/或上行资源指示信息被分配的频率位置。
在本发明实施例中，当发送所述调度指示信息的时频资源中存在空闲状态的时频资源时，通过以下至少之一方式填充所述空闲状态的时频资源：在下行资源指示信息和/或上行资源指示信息资源存在时长延长时，将所述空闲状态的时频资源前的下行资源指示信息和/或上行资源指示信息填充所述空闲状态的时频资源；将指定站点的下行资源指示信息和/或上行资源指示信息填充到所述空闲状态的时频资源。
在本发明实施例中，所述方法还包括：所述下行资源指示信息和/或上行资源指示信息封装在媒体接入控制MAC帧中，或所述下行资源指示信息和/或上行资源指示信息封装为信息块承载在物理帧头的信号SIG域中。
根据本发明的另一个实施例，还提供给了一种调度指示信息的接收方法，包括：解析接入点以部分重复方式发送的调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置；按照所述导航信息所指示的频率资源位置接收所述下行资源指示信息和/或上行资源指示信息。
在本发明实施例中，按照所述导航信息所指示的频率资源位置接收所述下行资源指示信息和/或上行资源指示信息之后，还包括：在所述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式接收所述接入点发送的下行数据；和/或在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式向所述接入点发送上行数据。
根据本发明的另一个实施例，还提供一种调度指示信息的发送装置，应用于接入点，包括：第一发送模块，设置为向参与本次调度的站点以部分重复方式发送调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源上以非重复发送的方式发送下行资源指示信息或上行资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置。
在本发明实施例中，所述第一发送模块，设置为在主20MHz信道上发送所述导航信息；以及在其他20MHz子信道上以非高吞吐non-HT重复的方式发送所述导航信息，其中，所述其他20MHz子信道为所述预先确定的所述调度指示信息占用的频率资源上除主20MHz信道外的子信道。
在本发明实施例中，所述装置，还包括：第二发送模块，设置为在所述下行资源指示信 息指示的资源位置上，以下行资源指示信息中指示的方式向所述站点发送下行数据；和/或接收模块，设置为在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式接收所述站点发送的上行数据。
在本发明实施例中，所述装置，还包括：延长模块，设置为在所述站点根据调度指示信息未能获取到分配到的频率资源时，延长所述下行资源指示信息和/或上行资源指示信息对应的时长；确定模块，设置为根据延长后的时长确定所述站点的下行资源指示信息和/或上行资源指示信息被分配的频率位置。
在本发明实施例中，所述装置还包括：填充模块，设置为在发送所述调度指示信息的时频资源中存在空闲状态的时频资源时，填充所述空闲状态的时频资源，所述填充模块设置为在下行资源指示信息和/或上行资源指示信息资源存在时长延长时，将所述空闲状态的时频资源前的下行资源指示信息和/或上行资源指示信息填充所述空闲状态的时频资源；以及将指定站点的下行资源指示信息和/或上行资源指示信息填充到所述空闲状态的时频资源。
根据本发明的另一个实施例，还提供了一种调度指示信息的接收装置，应用于站点，包括：解析模块，设置为解析接入点以部分重复方式发送的调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置；第一接收模块，设置为按照所述导航信息所指示的频率资源位置接收所述下行资源指示信息和/或上行资源指示信息。
在本发明实施例中，所述装置，还包括：第二接收模块，设置为在所述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式接收所述接入点发送的下行数据；和/或发送模块，设置为在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式向所述接入点发送上行数据。
通过本发明实施例，通过仅导航信息在预先确定的所述调度指示信息占用的频率资源上以完全重复的发送方式发送，而下行资源指示信息或上行资源指示信息在预先确定的所述调度指示信息占用的频率资源上是以非重复方式或者部分重复方式的技术方案，解决了相关技术中，辅子信道上完全重复发送主子信道上的所有用户调度信息而导致的持续时间长，资源浪费的问题，在用户数量较多时不会发生用户混淆的情况，具有资源利用率高的优点。
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是相关技术中802.11a的non-HT和802.11n的HT-mixed物理帧格式示意图；
图2是相关技术中802.11ac的物理帧结构示意图；
图3是根据本发明实施例的调度指示信息的发送方法的流程图；
图4为根据本发明实施例的调度指示信息的发送装置的结构框图；
图5为根据本发明实施例的调度指示信息的发送装置的再一结构框图；
图6为根据本发明实施例的调度指示信息的接收方法的流程图；
图7为根据本发明实施例的调度指示信息的接收装置的结构框图；
图8为根据本发明实施例的调度指示信息的接收装置的再一结构框图；
图9为根据本发明优选实施例一的每个站点独立封装为一个MAC帧的调度帧格式示意图；
图10为根据本发明优选实施例二的每个站点独立封装为一个MAC帧的非连续带宽的调度帧格式示意图；
图11为根据本发明优选实施例三的负载资源分配的优先方式示意图；
图12为根据本发明优选实施例四的物理帧头发送资源指示信息的示意图；
图13为根据本发明优选实施例五的不同长度的MAC帧需要补齐的示意图。
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。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
在本实施例中提供了一种调度指示信息的发送方法，图3是根据本发明实施例的调度指示信息的发送方法的流程图，如图3所示，该流程包括如下步骤：
步骤S302，确定参与本次调度的站点；
步骤S304，向参与本次调度的站点以部分重复方式发送调度指示信息，其中，调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，部分重复方式用于指示仅 上述导航信息在预先确定的上述调度指示信息占用的频率资源上重复发送，以及在上述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在上述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，导航信息用于指示上述站点对应的调度指示信息在上述调度指示信息所在帧中的位置。
通过上述各个步骤，通过仅导航信息在预先确定的上述调度指示信息占用的频率资源上以完全重复的发送方式发送，而下行资源指示信息或上行资源指示信息在预先确定的上述调度指示信息占用的频率资源上是以非重复方式或者部分重复方式的技术方案，解决了相关技术中，辅子信道上完全重复发送主子信道上的所有用户调度信息而导致的持续时间长，资源浪费的问题，在用户数量较多时不会发生用户混淆的情况，具有资源利用率高的优点。
需要说明的是，上述非重复方式可以理解为是一种禁止采用重复方式发送的发送方式，其是一种不采用重复发送方式的发送方法。
对于上述步骤S304中，向上述站点发送的上述导航信息在上述频率资源中重复发送，可以通过以下方式实现：在主20MHz信道上发送所述导航信息；在其他20MHz子信道上以非高吞吐non-HT重复的方式发送所述导航信息，其中，所述其他20MHz子信道为所述预先确定的所述调度指示信息占用的频率资源上除主20MHz信道外的子信道，即由于导航信息用于指示上述站点对应的调度指示信息在上述调度指示信息所在帧中的位置，在主子信道(相当于上述实施例的主20MHz信道)和辅子信道(相当于上述实施例的20MHz子信道)是都需要发送导航信息的，上述导航信息在上述接入点占用的频率资源上以重复方式发送是指上述接入点在主信道(主20MHz)上发送导航信息，并在上述接入点占用的频率资源的其他子信道上重复发送主信道的导航信息。
此外，相关技术中调度信息并不支持在非连续带宽上发送，并且调度信息发送时占用的非连续带宽应该包含后面的帧分配的带宽，为了解决上述技术问题，本发明实施例提供的其他20MHz子信道为带宽连续或者带宽非连续的子信道，即允许除主20MHz信道外的任意20MHz子信道不参与传输。
可选地，在本发明实施例的一个可选示例中，在执行步骤S304之后，还会执行以下技术方案：在上述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式向上述站点发送下行数据；和/或在上述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式接收上述站点发送的上行数据，在本发明实施例的优选示例中，下行资源指示信息和上行资源指示信息，与上述站点发送数据或接收数据均占用相同的频带，当然，还可能存在20M以MU-MIMO或者更小带宽复用方式调度了多个STA(站点)，那么其调度信息则占用MU-MIMO或者占用其他空闲的资源，例如，有的用户分配了大带宽40M或者80M，调度信息只用了20M，剩余部分是空闲的，
需要说明的是，本发明实施例还提供了一种技术方案：在不同站点调度到相同带宽，并以MU-MIMO共享频带资源时，通过MU-MIMO方式发送上述下行资源指示信息和/或上行资源指示信息。
在不同站点调度到相同带宽，且该相同带宽未能容纳所有站点的下行资源指示信息和/或上行资源指示信息时，在所述相同带宽以外的下行信道中为指定用户选择未被占用的频率资源发送所述下行资源指示信息和/或上行资源指示信息。，也就是说，后续数据如果被调度到相同的20MHz子信道，并以更小粒度进行OFDMA方式共享资源的不同站点的下行/上行资源指示信息，接入点根据被调度站点的下行信道空闲情况为复用的用户在上述接入点占用的频率资源上选择其他未被占用的资源发送。
本发明实施例还提供了以下技术方案：在上述站点根据调度指示信息未能获取到分配到的频率资源时，延长上述下行资源指示信息和/或上行资源指示信息对应的时长；根据延长后的时长确定上述站点的下行资源指示信息和/或上行资源指示信息被分配的频率位置。
进一步地，当发送上述调度指示信息的时频资源中存在空闲状态的时频资源时，通过以下至少之一方式填充上述空闲状态的时频资源：在下行资源指示信息和/或上行资源指示信息资源存在时长延长时，将上述空闲状态的时频资源前的下行资源指示信息和/或上行资源指示信息填充上述空闲状态的时频资源；将指定站点的下行资源指示信息和/或上行资源指示信息填充到上述空闲状态的时频资源。
需要说明的是，上述下行资源指示信息和/或上行资源指示信息封装在媒体接入控制MAC帧中，或上述下行资源指示信息和/或上行资源指示信息封装为信息块承载在物理帧头的信号SIG域中。
在本实施例中还提供了一种调度指示信息的发送装置，应用于接入点，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4为根据本发明实施例的调度指示信息的发送装置的结构框图。如图4所示，该装置包括：
第一确定模块40，设置为确定参与本次调度的站点；
第一发送模块42，与确定模块40连接，设置为向参与本次调度的站点以部分重复方式发送调度指示信息，其中，上述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，上述部分重复方式用于指示仅上述导航信息在预先确定的上述调度指示信息占用的频率资源上重复发送，以及在上述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在上述频率资源上以非重复发送的方式发送下行资源指示信息或上行资源指示信息，上述导航信息用于指示上述站点对应的调度指示信息在上述调度指示信息所在帧中的位置。
通过上述各个模块的综合应用，通过仅导航信息在预先确定的上述调度指示信息占用的频率资源上以完全重复的发送方式发送，而下行资源指示信息或上行资源指示信息在预先确定的上述调度指示信息占用的频率资源上是以非重复方式或者部分重复方式的技术方案，解决了相关技术中，辅子信道上完全重复发送主子信道上的所有用户调度信息而导致的持续时 间长，资源浪费的问题，在用户数量较多时不会发生用户混淆的情况，具有资源利用率高的优点。
其中，第一发送模块42设置为在主20MHz信道上发送所述导航信息；以及在其他20MHz子信道上以非高吞吐non-HT重复的方式发送所述导航信息，其中，所述其他20MHz子信道为所述预先确定的所述调度指示信息占用的频率资源上除主20MHz信道外的子信道。
如图5所示，上述装置还包括：第二发送模块44，设置为在上述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式向上述站点发送下行数据；和/或接收模块46，设置为在上述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式接收上述站点发送的上行数据。
可选地，在上述站点根据调度指示信息未能获取到分配到的频率资源时，上述装置还包括：延长模块48，设置为在上述站点根据调度指示信息未能获取到分配到的频率资源时，延长上述下行资源指示信息和/或上行资源指示信息对应的时长；第二确定模块50，设置为根据延长后的时长确定上述站点的下行资源指示信息和/或上行资源指示信息被分配的频率位置。
在本发明实施例中，上述装置还包括：填充模块52，设置为在发送上述调度指示信息的时频资源中存在空闲状态的时频资源时，填充上述空闲状态的时频资源，上述填充模块设置为在下行资源指示信息和/或上行资源指示信息资源存在时长延长时，将上述空闲状态的时频资源前的下行资源指示信息和/或上行资源指示信息填充上述空闲状态的时频资源；以及将指定站点的下行资源指示信息和/或上行资源指示信息填充到上述空闲状态的时频资源。
需要说明的是，对于上述调度指示信息的发送方案中，在发送资源指示信息前，接入点需要获得信道接入机会，并按照现有技术中的调度算法决策待调度的用户以及各用户的资源分配方案，本发明通过以下示例，以接入点为上述调度指示信息方案中的执行主体，对上述调度指示信息的发送方案进行简单说明：
接入点占用不小于为本次调度的所有站点分配的频率资源以部分重复的方式发送调度指示信息，上述调度指示信息包括导航信息和下行资源指示信息和/或上行资源指示信息，上述以部分重复的方式发送调度指示信息是指导航信息在上述接入点占用的频率资源上以重复方式发送，并且上述下行/上行资源指示信息在上述接入点占用的频率资源上以非重复或者部分重复的方式发送。
其中，接入点在下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式发送本次调度的站点的下行数据；接入点在上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式接收本次调度的各站点发射的上行数据，上述导航信息是指用于指示各站点其资源指示信息在本帧中的位置的信息。
进一步地，接入点优选地将站点的下行/上行资源指示信息放在与其后续数据占用频带相同的频带上，安排某站点的下行/上行资源指示信息时，如果与其数据占用频带相同的带宽已经被占用，优选地根据被调度站点的下行信道空闲状况选择其他尚未被占用的资源，后续数 据被调度到相同带宽的以MU-MIMO方式共享资源的不同站点的下行/上行资源指示信息可以以MU-MIMO的方式发送。
如果上述方式都未能为一个站点找到资源指示信息发送的位置，则将下行/上行资源指示信息的时长扩展，再以上述方式在新的时间内的上述接入点占用的频率资源上寻找发送位置。
进一步地，如果所有的被调度站点的下行/上行资源指示信息都已经调度完，用于发送资源指示信息的时频资源还有剩余，则接入点选择任意的下述方法来填充剩余资源：
(1)如果有下行/上行资源指示信息资源的时长扩展，将空闲资源的同频带前面时刻的资源指示信息重复以占用空闲资源；
(2)或者接入点选择一些重要站点的下行/上行资源指示信息重复填充到剩余的资源上以占用空闲资源。
需要说明的是，如果下行/上行资源指示信息封装在MAC帧中作为承载调度指示信息帧的物理层帧的负载，一个MAC帧中可以包含一个到多个站点的下行/上行资源指示信息，进一步地，如果不同带宽的MAC帧时域不一样长，非最长的MAC帧都需要补(padding)到与最长的MAC帧的时域长度，上述接入点发送的调度指示信息可以用于指示后续数据是上行的调度，也可以是指示后续数据是下行的调度，也可以部分用户是上行部分用户是下行。
为了完善上述调度指示信息的发送方案，在本发明实施例中，还提供了一种调度指示信息的接收方法，图6为根据本发明实施例的调度指示信息的接收方法的流程图，如图6所示，包括以下步骤：
步骤S602，解析接入点以部分重复方式发送的调度指示信息，其中，调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，部分重复方式用于指示仅上述导航信息在预先确定的上述调度指示信息占用的频率资源上重复发送，以及在上述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在上述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，导航信息用于指示上述站点对应的调度指示信息在上述调度指示信息所在帧中的位置；
步骤S604，按照上述导航信息所指示的频率资源位置接收上述下行资源指示信息和/或上行资源指示信息。
通过上述各个步骤，通过接收接入点按照以下方式发送的调度指示信息：仅导航信息在预先确定的上述调度指示信息占用的频率资源上以完全重复的发送方式发送，而下行资源指示信息或上行资源指示信息在预先确定的上述调度指示信息占用的频率资源上是以非重复方式或者部分重复方式，采用这样的技术方案，解决了相关技术中，辅子信道上完全重复发送主子信道上的所有用户调度信息而导致的持续时间长，资源浪费的问题，在用户数量较多时不会发生用户混淆的情况，具有资源利用率高的优点。
本发明实施例对上述技术方案的进一步改进在于，在执行步骤S604之后，还可以执行以 下技术方案：在上述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式接收上述接入点发送的下行数据；和/或在上述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式向上述接入点发送上行数据。
在本实施例中还提供了一种调度指示信息的接收装置，应用于站点，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7为根据本发明实施例的调度指示信息的接收装置的结构框图。如图7所示，该装置包括：
解析模块70，设置为解析接入点以部分重复方式发送的调度指示信息，其中，上述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，上述部分重复方式用于指示仅上述导航信息在预先确定的上述调度指示信息占用的频率资源上重复发送，以及在上述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在上述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，上述导航信息用于指示上述站点对应的调度指示信息在上述调度指示信息所在帧中的位置；
第一接收模块72，与解析模块70连接，设置为按照上述导航信息所指示的频率资源位置接收上述下行资源指示信息和/或上行资源指示信息。
通过上述各个模块的综合使用，通过接收接入点按照以下方式发送的调度指示信息：仅导航信息在预先确定的上述调度指示信息占用的频率资源上以完全重复的发送方式发送，而下行资源指示信息或上行资源指示信息在预先确定的上述调度指示信息占用的频率资源上是以非重复方式或者部分重复方式，采用这样的技术方案，解决了相关技术中，辅子信道上完全重复发送主子信道上的所有用户调度信息而导致的持续时间长，资源浪费的问题，在用户数量较多时不会发生用户混淆的情况，具有资源利用率高的优点。
可选地，如图8所示，上述装置还包括：第二接收模块74，设置为在上述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式接收上述接入点发送的下行数据；和/或发送模块76，设置为在上述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式向上述接入点发送上行数据。
为了更好的理解本发明实施例上述提供的技术方案，以下概念介绍如下：
1、接入点(Access Point，简称为AP)支持的频带，指设备固有属性；
2、AP工作的频带，开机配置或工作时可以变更；
3、AP实时监测获得本次可用频带，根据公用通信适配器(Common Communication Adapter，简称为CCA)检测和无线局域网EDCA的规则获得本次AP可用的频带；
4、AP本次调度用户数据的频带，根据调度算法确定；
5、AP发送带外调度信息的频带。
传统WLAN技术中，以上频带是20MHz、40MHz、80MHz、160MHz的连续频带，或者80MHz+80MHz的离散频带但是两段内是连续频带。并且上述频带的包含关系为：频带1>＝频带2>＝频带3>＝频带4＝频带5。
而本发明实施例中以上频带1与2与传统WLAN技术相同，频带3、4、5可以是任意几个20MHz组成的非连续频带；并且上述频带的包含关系为：频带1>＝频带2>＝频带3>＝频带5>＝频带4。
采用本发明实施例提供的上述技术方案，具有资源利用率高、不会发生用户混淆的优点，同时具有指示开销小，并实际应用中可以根据场景特点灵活选择的效果。
为了更好的理解上述技术方案，以下结合优选实施例进行说明，但不用于限定本发明实施例：
以下的优选实施例，接入点工作在160MHz频带上，在每个优选实施例中获得的资源占用机会不一样，需要说明的是，图9至图13中的L-STF是传统的短训练格式(Legacy-Short Training Format)的简称，L-LTF(Legacy-Long Training Format，传统的长训练格式)，HE-STF(HEW-Short Training Format，高效WLAN的短训练格式)，HE-LTF(HEW-Long Training Format，高效WLAN的长训练格式)。
优选实施例一
接入点获得160MHz连续带宽的接入机会，如图9所示。待调度N＝8个站点，将每个待调度的站点的资源指示信息单独封装一个MAC控制帧/管理帧中，将多个用户的资源指示信息下发作为物理层帧的负载。物理帧头的导航信息给出资源指示信息的位置指示。导航信息在主信道20MHz上发送所有站点的资源指示信息的位置，导航信息所占时域其余的可用带宽上以重复方式发送主信道的导航信息。
例如图9中的导航信息至少能指示以下内容：本次调度的站点标识及其资源指示信息在本帧的位置指示，如站点1占用子信道1、站点2占用子信道2、…….、站点N＝8占用子信道8。
如图9中的导航信息还可能包括以下内容的组合：导航信息的符号长度(例如4个OFDM符号)、本次调度的站点的个数(例如N个)、本次调度的站点标识列表(例如站点1到N的标识列表)、接入点相关的标识(例如接入点的ID(Identify，标识)的一部分或者经过计算或分配的值)、上行或者下行调度或者混合上下行的调度(例如只有下行调度)、帧中的长训练序列的符号个数(例如1个)。
资源指示信息作为MAC控制帧/管理帧的内容封装在物理层协议数据单元(PHY protocol data unit，简称为PPDU)的负载(payload)中。资源指示信息中顺序排放所有调度的用户的信息，如表1给出了一种封装为MAC层控制帧的示意图。一共有N个站点，所有站点共有 的资源指示信息和每个站点独立的资源指示信息分块放置。
表1多用户资源指示信息的MAC层控制帧格式示意
Figure PCTCN2015094829-appb-000001
另外，资源指示信息也可以封装为MAC层的管理帧格式，如表2示意。
表2多用户资源指示信息的MAC层管理帧格式示意
Figure PCTCN2015094829-appb-000002
如果站点1到N的资源指示信息是下行资源指示信息，对应站点1到N则接收对应的下行资源指示信息。接入点在下行资源指示信息中指示的资源位置按照下行资源指示信息指示的方式发送下行数据给对应站点，站点1到N在下行资源指示信息中指示的资源位置按照下行资源指示信息指示的方式接收给自己的下行数据。
类似的，如果站点1到N的资源指示信息是上行资源指示信息，对应站点1到N则接收对应的上行资源指示信息。站点1到N在上行资源指示信息中指示的资源位置按照上行资源指示信息指示的方式发送上行数据给接入点，接入点在上行资源指示信息中指示的资源位置按照上行资源指示信息指示的方式接收上行数据。
优选实施例二
如图10所示。该实施例与实施例一的区别仅在于发送的带宽不连续。有若干20MHz在帧发送时不填充任何信息，如图10中的子信道7不填充。其他子信道与实施例一的满带宽上发送时对应的位置内容相同。值得说明的是，哪些子信道不可用并不影响其他子信道是否可用，并不需传统WLAN技术中受限于信道化而必须采用20/40/80/160MHz或者80+80MHz。
优选实施例三
接入点获得140MHz不连续带宽的接入机会，如图11所示。接入点在安排资源指示信息时，优选地将站点的资源指示信息放在与其数据占用频带相同的频带上。如图11所示，SIFS前是资源指示信息帧，间隔SIFS后是调度的各站点的资源分布示意。
调度到相同带宽的以MU-MIMO方式共享资源的不同站点的资源指示信息可以以MU-MIMO的方式发送。例如图11中，站点5、6以MU-MIMO方式共享子信道3，则将站点5、6的资源指示信息都放在子信道3上。可以采用类似实施例一的形式将站点5、6的资 源指示信息封装到一个MAC控制帧或者管理帧中发送，也可以将站点5、6的资源指示信息分别封装到一个MAC控制帧或者管理帧中将两个独立MAC帧进行MU-MIMO方式的发送。
如果安排某站点的资源指示信息时，与其数据占用频带相同的带宽已经被占用，优选地根据被调度站点的下行信道空闲状况选择其他尚未被占用的资源。调度到相同的20MHz的以更小粒度进行OFDMA方式共享资源的不同站点的资源指示信息，接入点根据被调度站点的下行信道空闲情况为复用的用户其选择其他未被占用的资源。例如图9中，站点7、8、9分别占用主信道中的10MHz、5MHz、5MHz的频带，站点7、8、9的资源指示信息封装到一个MAC控制帧或者管理帧中发送，也可以将站点7、8、9的资源指示信息分别封装到一个MAC控制帧或者管理帧中在资源指示信息帧中，将站点7的资源指示信息在主信道20MHz发送，而站点8、9的MAC调度包则分别在子信道5、6发送。
优选实施例四
接入点获得120MHz不连续带宽的接入机会，如图12所示。接入点将每个待调度的站点的资源指示信息做成资源指示信息块，放在物理帧的SIG信息中，物理帧头的导航信息给出资源指示信息的位置指示。该方式指示资源指示信息时物理帧不带负载(payload)。
接入点在安排资源指示信息时，优选地将站点的资源指示信息放在与其数据占用频带相同的频带上。如果安排某站点的资源指示信息时，与其数据占用频带相同的带宽已经被占用，优选地根据被调度站点的下行信道空闲状况选择其他尚未被占用的资源。调度到相同的20MHz的以更小粒度进行OFDMA方式共享资源的不同站点的资源指示信息，接入点根据被调度站点的下行信道空闲情况为复用的用户其选择其他未被占用的资源。
如果上述方式都未能为一个站点找到资源指示信息发送的位置，则将资源指示信息的时长扩展。再以上述方式在新的时间内的不同频带上寻找位置。如图10中，SIG中一列(时域的一段固定长度)不够分配，则扩展了新的一列，在新的一列放置站点9、10的资源指示信息。
如果所有的被调度站点的资源指示信息都已经调度完，用于发送资源指示信息的时频资源还有剩余，则接入点选择任意的下述方法来填充剩余资源：
如果有资源指示信息资源的时长扩展，将空闲资源的同频带前面时刻的资源指示信息重复以占用空闲资源。例如图12中站点4的资源指示信息在第二列重复了一次。
或者接入点选择一些重要站点的资源指示信息重复填充到剩余的资源上以占用空闲资源。例如图12中站点9和站点5的资源被重复发送了。
优选实施例五
接入点获得120MHz不连续带宽的接入机会，如图13所示，负载部分每个子信道上是一个MAC帧，其中包含不同个数站点的资源指示信息，因此负载部分在时域上不对齐。如图12所示，整个带宽上要求对齐，对非最长的MAC包都做补齐(padding)操作，与最长的对 齐。
优选实施例六
以上所有优选实施例中，接入点发送的调度指示信息可以用于指示后续数据是上行的调度，也可以是指示后续数据是下行的调度，也可以部分用户是上行部分用户是下行。例如，图10所示的站点1到N的资源指示信息可以全部是后续帧是上行的指示信息，也可以全部是下行的指示信息，还可以部分是上行部分是下行。
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。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的对象在适当情况下可以互换，以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
综上所述，本发明实施例达到了以下技术效果：具有资源利用率高、不会发生用户混淆的优点，同时具有指示开销小，并实际应用中可以根据场景特点灵活选择的效果。
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。
以上所述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
通过本发明实施例的技术方案，仅导航信息在预先确定的所述调度指示信息占用的频率资源上以完全重复的发送方式发送，而下行资源指示信息或上行资源指示信息在预先确定的所述调度指示信息占用的频率资源上是以非重复方式或者部分重复方式的技术方案，解决了相关技术中，辅子信道上完全重复发送主子信道上的所有用户调度信息而导致的持续时间长， 资源浪费的问题，在用户数量较多时不会发生用户混淆的情况，具有资源利用率高的优点。

Claims (19)

  1. 一种调度指示信息的发送方法，包括：
    向参与本次调度的站点以部分重复方式发送调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置。
  2. 根据权利要求1所述的方法，其中，向所述站点发送的所述导航信息在所述频率资源中重复发送，包括：
    在主20MHz信道上发送所述导航信息；
    在其他20MHz子信道上以非高吞吐non-HT重复的方式发送所述导航信息，其中，所述其他20MHz子信道为所述预先确定的所述调度指示信息占用的频率资源上除主20MHz信道外的子信道。
  3. 根据权利要求2所述的方法，其中，所述其他20MHz子信道为带宽连续或者带宽非连续的子信道。
  4. 根据权利要求1所述的方法，其中，向参与本次调度的站点以部分重复方式发送调度指示信息之后，还包括：
    在所述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式向所述站点发送下行数据；和/或
    在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式接收所述站点发送的上行数据。
  5. 根据权利要求1所述的方法，其中，所述站点的下行资源指示信息和上行资源指示信息，与所述站点发送数据或接收数据均占用相同的频带。
  6. 根据权利要求5所述的方法，其中，在不同站点调度到相同带宽，并以多用户多入多出方式MU-MIMO共享频带资源时，通过MU-MIMO方式发送所述下行资源指示信息和/或上行资源指示信息。
  7. 根据权利要求1所述的方法，其中，在不同站点调度到相同带宽，且该相同带宽未能容纳所有站点的下行资源指示信息和/或上行资源指示信息时，在所述相同带宽以外的下行信道中为指定用户选择未被占用的频率资源发送所述下行资源指示信息和/或上行资源指示信息。
  8. 根据权利要求1所述的方法，其中，所述方法还包括：
    在所述站点根据调度指示信息未能获取到分配到的频率资源时，延长所述下行资源指示信息和/或上行资源指示信息对应的时长；
    根据延长后的时长确定所述站点的下行资源指示信息和/或上行资源指示信息被分配的频率位置。
  9. 根据权利要求1-8任一项所述的方法，其中，当发送所述调度指示信息的时频资源中存在空闲状态的时频资源时，通过以下至少之一方式填充所述空闲状态的时频资源：
    在下行资源指示信息和/或上行资源指示信息资源存在时长延长时，将所述空闲状态的时频资源前的下行资源指示信息和/或上行资源指示信息填充所述空闲状态的时频资源；
    将指定站点的下行资源指示信息和/或上行资源指示信息填充到所述空闲状态的时频资源。
  10. 根据权利要求1-8任一项所述的方法，其中，所述方法还包括：
    所述下行资源指示信息和/或上行资源指示信息封装在媒体接入控制MAC帧中，或所述下行资源指示信息和/或上行资源指示信息封装为信息块承载在物理帧头的信号SIG域中。
  11. 一种调度指示信息的接收方法，包括：
    解析接入点以部分重复方式发送的调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源中以非重复发送的方式发送下行资源指示信息或上行资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置；
    按照所述导航信息所指示的频率资源位置接收所述下行资源指示信息和/或上行资源指示信息。
  12. 根据权利要求11所述的方法，其中，按照所述导航信息所指示的频率资源位置接收所述下行资源指示信息和/或上行资源指示信息之后，还包括：
    在所述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式接收所述接入点发送的下行数据；和/或
    在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式向所述接入点发送上行数据。
  13. 一种调度指示信息的发送装置，应用于接入点，包括：
    第一发送模块，设置为向参与本次调度的站点以部分重复方式发送调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源上以非重复发送的方式发送下行资源指示信息或上行资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置。
  14. 根据权利要求13所述的装置，其中，所述第一发送模块，设置为在主20MHz信道上发送所述导航信息；以及在其他20MHz子信道上以非高吞吐non-HT重复的方式发送所述导航信息，其中，所述其他20MHz子信道为所述预先确定的所述调度指示信息占用的频率资源上除主20MHz信道外的子信道。
  15. 根据权利要求13所述的装置，其中，所述装置，还包括：
    第二发送模块，设置为在所述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式向所述站点发送下行数据；和/或
    接收模块，设置为在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式接收所述站点发送的上行数据。
  16. 根据权利要求13所述的装置，其中，所述装置，还包括：
    延长模块，设置为在所述站点根据调度指示信息未能获取到分配到的频率资源时，延长所述下行资源指示信息和/或上行资源指示信息对应的时长；
    确定模块，设置为根据延长后的时长确定所述站点的下行资源指示信息和/或上行资源指示信息被分配的频率位置。
  17. 根据权利要求13-16任一项所述的装置，其中，所述装置还包括：填充模块，设置为在发送所述调度指示信息的时频资源中存在空闲状态的时频资源时，填充所述空闲状态的时频资源，所述填充模块设置为在下行资源指示信息和/或上行资源指示信息资源存在时长延长时，将所述空闲状态的时频资源前的下行资源指示信息和/或上行资源指示信息填充所述空闲状态的时频资源；以及将指定站点的下行资源指示信息和/或上行资源指示信息填充到所述空闲状态的时频资源。
  18. 一种调度指示信息的接收装置，应用于站点，包括：
    解析模块，设置为解析接入点以部分重复方式发送的调度指示信息，其中，所述调度指示信息包括：导航信息，下行资源指示信息和/或上行资源指示信息，所述部分重复方式用于指示仅所述导航信息在预先确定的所述调度指示信息占用的频率资源上重复发送，以及在所述频率资源上重复发送下行资源指示信息或上行资源指示信息中部分站点的指示信息，或者在所述频率资源中以非重复发送的方式发送下行资源指示信息或上行 资源指示信息，所述导航信息用于指示所述站点对应的调度指示信息在所述调度指示信息所在帧中的位置；
    第一接收模块，设置为按照所述导航信息所指示的频率资源位置接收所述下行资源指示信息和/或上行资源指示信息。
  19. 根据权利要求18所述的装置，其中，所述装置，还包括：
    第二接收模块，设置为在所述下行资源指示信息指示的资源位置上，以下行资源指示信息中指示的方式接收所述接入点发送的下行数据；和/或
    发送模块，设置为在所述上行资源指示信息指示的资源位置上，以上行资源指示信息中指示的方式向所述接入点发送上行数据。
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