WO2014161496A1 - Procédé de transmission de données, dispositif de station et support de stockage lisible par ordinateur - Google Patents

Procédé de transmission de données, dispositif de station et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2014161496A1
WO2014161496A1 PCT/CN2014/074679 CN2014074679W WO2014161496A1 WO 2014161496 A1 WO2014161496 A1 WO 2014161496A1 CN 2014074679 W CN2014074679 W CN 2014074679W WO 2014161496 A1 WO2014161496 A1 WO 2014161496A1
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WIPO (PCT)
Prior art keywords
nav
value
radio frame
arrival
angle range
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PCT/CN2014/074679
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English (en)
Chinese (zh)
Inventor
田开波
邢卫民
姜静
孙波
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中兴通讯股份有限公司
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Publication of WO2014161496A1 publication Critical patent/WO2014161496A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance

Definitions

  • the present invention relates to the field of wireless communications, and in particular to a data transmission method and a site device, Computer readable storage medium.
  • CSMA/CA Wave Sense Multiple Access Collision Avoidance
  • a and B are outside the communication coverage of the other party, and they are not listening to each other. To, but both sites can communicate with another site C, then based on CSMA/CA It is possible for the mechanism to have A and B transmit to C at the same time, which creates a conflict.
  • the IEEE organization proposed a virtual channel detector.
  • System includes channel reservation period (Duration) information in the radio frame, and receives the radio frame
  • the listening station sets the locally stored network allocation vector according to the channel reservation period (Duration) information.
  • NAV Network Allocation Vector
  • the listening site will not send data, thus avoiding the hidden The problem of competing channels between Vietnamese sites. After the NAV is reduced to zero, the listening site can send data.
  • millimeter wave communication has developed rapidly, such as the IEEE 802.11ad standard positioned at 60 GHz. Standard, and IEEE802.11aj for the 45GHz and 60GHz bands in China during the research process standard.
  • Millimeter waves propagate in free space and are greatly affected by atmospheric absorption. They can only be applied to short distances. From wireless communication, its important application scenario is indoor environment. At the same time, due to the shorter wavelength, In the indoor environment, the millimeter wave has a very large emission loss and transmission loss, and is mainly used for viewing line of sight. letter. Based on the above inherent propagation characteristics, directional transmission is a major technical advantage of millimeter wave applications.
  • the body is implemented by a phased array or a directional antenna.
  • an embodiment of the present invention provides a data sending method, a site device, and a computer.
  • Readable storage medium to solve the problem of directional transmission and NAV mechanism combined with the application when the audition site cannot be performed The waste of space resources caused by data transmission.
  • the segment information configures the network allocation vector NAV, and the site holds the NAV corresponding to the RMS value saved by itself. a space outside the spatial angle range to form a beam for data transmission; or,
  • the site is pre-configured with one or more NAVs corresponding to the set space angle range, the site is itself Within the spatial angle range corresponding to the saved NAV of the specific value, a beam is formed for data transmission.
  • the NAV taking the RMS value is a NAV taking a non-zero value
  • the NAV of a particular value is a NAV with a value of zero.
  • the station is based on the direction of arrival of the received radio frame and the
  • the channel reservation period information configuration NAV carried by the radio frame includes:
  • the station is based on the direction of arrival of the received radio frame and the
  • the channel reservation period information configuration NAV carried by the radio frame includes:
  • determining the direction of arrival of the received radio frame and the location saved by the station Whether the spatial angle range corresponding to the RMS of the valid value matches including: if the configuration site saves Obtaining the direction of arrival of the radio frame on which the spatial angle range corresponding to the NAV of the RMS value is based If the angle of arrival of the received radio frame differs by more than a set threshold, it is determined to be a mismatch; otherwise It is judged as a match.
  • determining whether to update the value of the matched NAV includes:
  • the update is performed when the matched NAV satisfies the following conditions: the matched NAV indicates The channel reservation end time is earlier than the channel indicated by the channel reservation period information carried by the received radio frame Appointment time.
  • the site is pre-configured to correspond to a range of set space angles Or multiple NAVs
  • the method further includes: the station according to the arrival direction and location of the received radio frame Transmitting the channel reservation period information carried by the radio frame, and updating the set space angle range corresponding to The value of NAV.
  • updating the value of the NAV corresponding to the set spatial angle range include:
  • the channel reservation end time indicated by the NAV corresponding to the set spatial angle range is earlier than the received wireless Updating the NAV when the channel reservation end time indicated by the channel reservation period information carried by the frame is updated value.
  • the method when updating the value of the NAV, the method further includes: receiving no The direction of the NAV of the spatial angle range pointed by the direction of arrival of the line frame plus 180 degrees is further new.
  • the method when updating the value of the NAV, further includes: receiving the received no The range of spatial angles to which the direction of arrival of the line frame is rotated clockwise after the first predetermined angle, and/or inverse The value of the NAV corresponding to the spatial angle range to which the hour hand rotates after the second predetermined angle is updated is updated.
  • the value of the updated NAV is a channel carried by the received radio frame. Reserve time period information value.
  • the site holds a range of spatial angles corresponding to each NAV. Sub-overlapping or non-overlapping; the spatial angle range corresponding to each NAV saved by the site is equal or not Wait.
  • the method further comprises: the non-zero NAV saved by the station itself
  • a site device provided by an embodiment of the present invention includes: a network allocation vector NAV configuration mode Block and data sending module, where:
  • the NAV configuration module is configured to be based on the direction of arrival of the received radio frame and the absence
  • the channel reservation period information carried by the line frame is configured with the NAV; or, the corresponding set space angle is pre-configured.
  • the data sending module is configured to take a valid value saved in the NAV configuration module
  • the space outside the spatial angle range corresponding to the NAV forms a beam for data transmission; or, Formed within the spatial angle range corresponding to the NAV of the specific value saved by the NAV configuration module
  • the beam carries out data transmission.
  • the NAV taking the RMS value is a NAV taking a non-zero value
  • the NAV of a particular value is a NAV with a value of zero.
  • the NAV configuration module is further configured to receive radio frames.
  • the carried channel reservation period information value is configured as the value of the NAV; it is also configured to reach the radio frame
  • the direction rotates the first offset angle clockwise and the corresponding offset space after rotating the second offset angle counterclockwise
  • the range of angles is configured as the range of spatial angles corresponding to the NAV.
  • the NAV configuration module is further configured to determine that the received Whether the direction of arrival of the line frame matches the range of spatial angles of the saved NAV taking the effective value, If the direction of arrival of the received radio frame is the same as the saved NAV of all valid values If the range of angles does not match, configure a new NAV; if the site saves all the NAVs that take the RMS value If there is a matching in the corresponding spatial angle range and the arrival direction of the received radio frame, Whether to update the value of the matching NAV.
  • the NAV configuration module is further configured to configure the saved Obtaining the direction of arrival of the radio frame on which the spatial angle range corresponding to the NAV of the RMS value is based If the angle of arrival of the received radio frame differs by more than the set threshold, it is determined to be a mismatch; otherwise It is judged as a match.
  • the NAV configuration module is further configured to satisfy the following conditions: The value of the matched NAV is updated: the channel reservation indicated by the matched NAV ends The time is earlier than the channel reservation end time indicated by the channel reservation period information carried by the received radio frame.
  • the NAV configuration module is further configured to receive wireless according to Updating the set space by the arrival direction of the frame and the channel reservation period information carried by the radio frame The value of the NAV corresponding to the angular range.
  • the NAV configuration module is further configured to when the set space angle If the range includes the direction of arrival of the radio frame received by the station, if the set space angle range The channel reservation end time indicated by the corresponding NAV is earlier than the channel reservation carried by the received radio frame. When the channel reservation end time indicated by the segment information is updated, the value of the NAV is updated.
  • the NAV configuration module is further configured to update the value of the NAV. Corresponding to the spatial angle range pointed to by the direction of arrival of the received radio frame by 180 degrees The value of NAV is updated.
  • the NAV configuration module is further configured to update the value of the NAV.
  • the NAV configuration module is further configured to update the value of the NAV.
  • the value of the updated NAV is a channel carried by the received radio frame. Reserve time period information value.
  • the data sending module is further configured to perform the saving in the save A zero-valued NAV indicates that the channel reservation end time is reached before the saved NAV that takes a non-zero value A space outside the range of the corresponding spatial angle forms a beam for data transmission.
  • a computer readable storage medium provided by an embodiment of the present invention, the storage medium includes a The group instruction is used to execute the data sending method according to the embodiment of the present invention.
  • the data sending method and the site device provided by the embodiment of the present invention: the site is based on the received no Configuring a network allocation vector NAV by the direction of arrival of the line frame and the channel reservation period information carried by the radio frame,
  • the site forms a space outside the spatial angle range corresponding to the NAV of the RMS value saved by itself. Beam for data transmission; or, the station is pre-configured to correspond to one of the set space angle ranges or Multiple NAVs, the site is within the spatial angle range corresponding to the NAV of the specific value saved by itself. Beam into data transmission.
  • the space for data transmission is divided so that the site is in the The space outside the spatial angle range corresponding to the NAV of the effect value, or the NAV indication is a specific value (example)
  • Data transmission within a spatial angle range such as 0) resolves the decision to the transmission and NAV mechanism
  • the listening site can not waste space resources caused by data transmission, effectively improve Space resource utilization.
  • Figure 1 is a schematic diagram of mutual transmission without interference
  • FIG. 2 is a flowchart of a data sending method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of four site location layouts in a NAV configuration according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of three site locations in a NAV configuration according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic diagram of three site locations in a NAV configuration according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic diagram of three site locations in a NAV configuration according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic diagram of three site locations in a NAV configuration according to Embodiment 5 of the present invention.
  • FIG. 8 is a schematic diagram of a data sending device according to an embodiment of the present invention.
  • the data sending method of the embodiment of the present invention is as shown in FIG. 2, and includes:
  • Step 201 The station according to the direction of arrival of the received radio frame and the channel pre-held by the radio frame About the time period information configures the network allocation vector (NAV), the NAV of the RMS value saved by the station itself A space outside the range of the corresponding spatial angle forms a beam for data transmission.
  • NAV network allocation vector
  • Step 202 The station pre-configures one or more NAVs corresponding to the set space angle range, The station forms a beam within a spatial angle range corresponding to the NAV of the specific value saved by itself. data transmission.
  • the NAV taking the RMS value is a NAV taking a non-zero value; the NAV taking a specific value is a value A NAV of zero.
  • the spatial angle corresponding to each NAV saved by the site (including the sum of the valid values and the specific value) Degree ranges overlap or do not overlap.
  • Each NAV saved by the site (including the sum of the valid values) The corresponding spatial angle ranges of the specific values are equal or unequal.
  • step 201 The implementation of the NAV in step 201 is specifically described in the following embodiments of the present invention. the way:
  • Method 1 This method is for the case where the site does not save any NAV:
  • the value of the NAV is set according to the channel reservation period information carried by the received radio frame.
  • the indication is the channel reservation end time; and, the direction of arrival of the radio frame is rotated clockwise by the first offset
  • the angle range and the corresponding spatial angle range after rotating the second offset angle counterclockwise are configured as NAV
  • the corresponding spatial angle range wherein, the first offset angle and the second offset angle are equal or unequal.
  • Method 2 This method only saves the NAV of the valid value for the site:
  • determining whether to update the matched NAV includes: when the matched NAV satisfies the following conditions Update: The channel reservation end time indicated by the matched NAV is earlier than the received radio frame. The channel reservation end time indicated by the channel reservation period information.
  • step 201 data transmission is performed because the site saves all valid NAVs.
  • the station needs to save the channel reservation of the NAV indicated by the valid value (ie non-zero value)
  • the space angle corresponding to the NAV that takes the effective value (ie, non-zero value) A space outside the space forms a beam for data transmission.
  • step 202 is specifically as follows:
  • the site divides the space available to it in advance to obtain one or more settings.
  • the range of spatial angles, each set of spatial angle range corresponds to a NAV, and the value of the NAV can be A valid value can also be a specific value.
  • the station If the station receives a radio frame, the station according to the direction of arrival of the received radio frame And the channel reservation period information carried by the radio frame, updating the NAV corresponding to the set space angle range Value, specifically: when the set spatial angle range includes the arrival direction of the radio frame received by the station, If the set channel angle range corresponds to the NAV, the channel reservation end time is earlier than the received no. Updating the NAV when the channel reservation end time indicated by the channel reservation period information carried by the line frame is updated Value (here, if the channel reservation period information carried by the radio frame indicates a channel reservation) End time, then, by default, the channel reservation ending with a specific value, that is, a NAV indication with a value of zero The time is earlier than the channel reservation end time).
  • the NAV with the valid value saved by the site also has a specific value of NAV, Or, if all the saved NAVs are specific values, the site needs to be in the data transmission.
  • the valid value is taken before the channel reservation end time indicated by the NAV indication of the RMS value is saved.
  • the space outside the spatial angle range corresponding to the NAV forms a beam for data transmission. Specific The spatial angular range corresponding to the NAV of the value can be used at any time.
  • the station determines to update the NAV, preferably, it can also be docked.
  • the space angle range to which the angle belongs, and/or the space to which the second preset angle is rotated counterclockwise The value of the NAV corresponding to the angle range is updated. Wherein the first preset angle and the second preset angle Equal or not equal.
  • the updated NAV is a channel preamble indicated by the channel reservation period information carried by the received radio frame. About the end time.
  • each site A plurality of NAVs are saved, and the spatial angle range corresponding to each NAV is based on the received The direction of arrival of the line frame is determined. In this embodiment, it is assumed that each site is not set in the initial stage. NAV.
  • STA-a receives the radio frame 1 that STA-b communicates with a certain site, but this is not Line frame 1 is not sent to STA-a, and STA-a itself has not set NAV, therefore, STA-a Need to set a NAV, called NAV-a1, the value is based on the channel reservation carried by the radio frame 1.
  • the segment information is set to indicate the channel reservation end time.
  • the space corresponding to NAV-a1 The angle ranges from b- ⁇ b1 to b+ ⁇ b2 (values range from 0-360 degrees), where b is the radio frame
  • the direction of arrival of 1 , ⁇ b1 (first offset angle) and ⁇ b2 (second offset angle) can be based on Body application settings.
  • STA-a At some point after receiving the radio frame 1 in which STA-b communicates with a certain station, STA-a is connected. Received a radio frame 2 in which STA-c communicates with a certain station, but the radio frame 2 is not sent to STA-a, assuming that the direction of arrival of the radio frame 2 is c, at this time STA-a only saves one
  • the NAV of the effect value that is, NAV-a1
  • the difference is large (the difference size standard can be preset according to the specific application; when the difference is large, it is considered as none
  • the arrival direction c of the line frame 2 does not match the spatial angle range corresponding to NAV-a1.
  • NAV-a2 the NAV-a2 value is carried according to the radio frame 2 Channel reservation period information setting, indicating channel reservation end time, corresponding spatial angle range
  • the circumference is c- ⁇ c1 to c+ ⁇ c2 (value range is 0-360 degrees), ⁇ c1 (first offset angle) and ⁇ C2 (second offset angle) can be set according to the specific application, as shown in Figure 3.
  • STA-a At some point after receiving the radio frame 2 in which STA-c communicates with a certain station, STA-a is connected. Received a radio frame 3 in which STA-d communicates with a certain station, but the radio frame 3 is not sent to STA-a.
  • STA-a only caches two NAVs, that is, NAV-a1 and NAVa-2, and the angle of arrival of the radio frame 3 with the direction of arrival of the radio frame 1
  • the degree b difference is large (ie, no match)
  • the angles of the angles are small (the difference is small, and the direction of arrival d of the radio frame 3 and the space corresponding to NAVa-2 are considered to be empty.
  • STA-a does not need to reset NAV, but need to judge whether it is more New NAV-a2 value: If the channel reservation end time corresponding to the radio frame 3 is later than the NAV-a2 indication The channel reservation end time is updated with NAV-a2, and the updated NAV-a2 is carried according to the radio frame 3. The channel reservation period information setting of the band is indicated as the channel reservation end time; otherwise it is not updated.
  • the spatial angle range corresponding to NAV-a2 remains unchanged (c- ⁇ c1 to c+ ⁇ c2) or appropriately changed (ie, change the value of ⁇ c1 and / or ⁇ c2, such as maintaining the value of ⁇ c1, but expanding the value of ⁇ c2).
  • NAV-a1 After receiving the radio frame 3 in which STA-d communicates with a certain station, if the current time has not arrived yet The channel reservation end time indicated by NAV-a1, STA-a can only use when sending data NAV-a1 corresponds to the space outside the spatial angle range to send data, and if the current time is still The channel reservation end time indicated by NAV-a2 is not reached, and STA-a only needs to use when transmitting data.
  • the space outside the spatial angle range corresponding to NAV-a2 transmits data. For example, indicated by NAV-a1
  • the channel reservation end time is 13:00, and before 13:00, STA-a cannot use NAV-a1.
  • the spatial angle range transmits data; the channel reservation end time indicated by NAV-a2 is 14:00, that Before 14:00, STA-a cannot use the spatial angle range corresponding to NAV-a2 to send data.
  • the three sites are STA-a, STA-b, and STA-c, and each site is pre- First set four NAVs, corresponding to different spatial angles, such as the four NAVs of STA-a For NAV-a1, NAV-a2, NAV-a3, and NAV-a4, the corresponding spatial angle range is shown in Figure 4. They are a1, a2, a3, and a4, respectively.
  • the four spatial angle ranges do not overlap as shown in Figure 4, but It can also be configured to partially overlap; the four NAVs of STA-b are NAV-b1 and NAV-b2, respectively.
  • NAV-b3 and NAV-b4, the corresponding spatial angle range is shown as b1, b2, b3, respectively.
  • the four spatial angle ranges do not overlap as shown in Figure 4, but can also be configured as part Overlapping;
  • the four NAVs of STA-c are NAV-c1, NAV-c2, NAV-c3, and NAV-c4, respectively.
  • the corresponding spatial angle ranges are shown as c1, c2, c3, and c4 in Figure 4, respectively.
  • the angular ranges do not overlap as shown in FIG. 4, but may also be configured to partially overlap; in this embodiment,
  • the values of all the above NAVs are initialized to 0 (one or more of them can be set as needed) Set to take a valid value).
  • STA-a initiates transmission to STA-b
  • STA-c corresponds to null from NAV-c4.
  • the inter-angle range c4 receives the information including the channel reservation period information sent by the STA-a to the STA-b. a radio frame, and the direction of arrival of the radio frame is within a spatial angle range c4 corresponding to NAV-c4, that STA-c updates NAV-c4 according to the channel reservation period information included in the received radio frame, corresponding to The spatial angle range c4 remains unchanged; while updating the arrival direction of the radio frame plus 180 degrees
  • the spatial angle range c2 corresponding to the spatial angle range c2 of the direction remains unchanged.
  • the channel reservation period corresponding to STA-a is known.
  • STA-c cannot use the spatial angle range c4 and c2 for data transmission.
  • data transmission can be performed using spatial angle ranges c1 and c3.
  • the three sites are STA-a, STA-b, and STA-c, and each site is pre- First, 12 NAVs are set, corresponding to different spatial angle ranges, such as 12 NAVs of STA-a. They are NAV-a1, NAV-a2, NAV-a3, NAV-a4, NAV-a5, NAV-a6, NAV-a7, NAV-a8, NAV-a9, NAV-a10, NAV-a11, NAV-a12, corresponding spatial angle range
  • Figure 5 shows a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12;
  • the 12 NAVs of STA-b are NAV-b1, NAV-b2, NAV-b3, NAV-b4, and NAV-b5, respectively.
  • the range of spatial angles required is b1, b2, b3, b4, b5, b6, b7, b8, as shown in Fig. 5, respectively.
  • NAVs of STA-c are NAV-c1, NAV-c2, NAV-c3, NAV-c4, NAV-c5, NAV-c6, NAV-c7, NAV-c8, NAV-c9, NAV-c10, NAV-c11, NAV-c12, the corresponding spatial angle range is c1, c2, c3, c4, c5, as shown in Figure 5, respectively.
  • C6, c7, c8, c9, c10, c11, c12; in this embodiment, all of the above NAV values are initial Initialize to 0 (one or more of them can be set to take a valid value as needed).
  • STA-a initiates transmission to STA-b
  • STA-c corresponds to NAV-c10
  • Radio frame m of interest, and the direction of arrival of the radio frame m is in the spatial angle range corresponding to NAV-c10
  • STA-c uses the channel reservation period information included in the received radio frame m to update NAV-c10, the corresponding spatial angle range c10 remains unchanged.
  • Wireless sent by STA-b to STA-a Frame n uses the spatial angle range b10 corresponding to NAV-b10 because it is in the spatial angle range b10
  • the radio frame STA-c for directional transmission is not received, so STA-c is in this STA-a and Only NAV-c10 has been updated in the transmission of STA-b.
  • the channel reservation period corresponding to the STA-a is known.
  • STA-c cannot transmit data within the spatial angle range c10, but It is possible to use the spatial angle range corresponding to the remaining 11 NAVs for data transmission.
  • the three sites are STA-a, STA-b, and STA-c, and each site is pre- First, 12 NAVs are set, corresponding to different spatial angle ranges, such as 12 NAVs of STA-a. They are NAV-a1, NAV-a2, NAV-a3, NAV-a4, NAV-a5, NAV-a6, NAV-a7, NAV-a8, NAV-a9, NAV-a10, NAV-a11, NAV-a12, corresponding spatial angle range Shown in Figure 6 are a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12;
  • the 12 NAVs of STA-b are NAV-b1, NAV-b2, NAV-b3, NAV-b4, and NAV-b5, respectively.
  • the range of spatial angles required is b1, b2, b3, b4, b5, b6, b7, b8, as shown in Fig. 6, respectively.
  • NAVs of STA-c are NAV-c1, NAV-c2, NAV-c3, NAV-c4, NAV-c5, NAV-c6, NAV-c7, NAV-c8, NAV-c9, NAV-c10, NAV-c11, NAV-c12, the corresponding spatial angle range is c1, c2, c3, c4, c5, as shown in Figure 6, respectively.
  • C6, c7, c8, c9, c10, c11, c12; in this embodiment, all of the above NAV values are initial Initialize to 0 (one or more of them can be set to take a valid value as needed).
  • STA-a initiates transmission to STA-b
  • STA-c corresponds to NAV-c10
  • Radio frame x of interest, and the direction of arrival of the radio frame x is in the spatial angle range corresponding to NAV-c10
  • STA-c updates with the channel reservation period information contained in the received radio frame x NAV-c10, the corresponding spatial angle range c10 remains unchanged.
  • STA-c will also receive STA-b
  • the time period information is updated NAV-c4, and the corresponding spatial angle range c4 remains unchanged.
  • the channel reservation period corresponding to STA-a is known.
  • the channel reservation period y corresponding to the STA-b is known, and within the channel reservation period x, STA-c cannot perform data transmission within the spatial angle range c10; within the channel reservation period y, STA-c cannot perform data transmission within the spatial angle range c4; if channel reservation period x and channel The reservation period y has coincidence, then in this coincident period, STA-c cannot be in the spatial angle range Data transmission is performed in c10 and c4.
  • the remaining 10 NAVs correspond to a range of spatial angles in any Data can be transferred at any time.
  • the three sites are STA-a, STA-b, and STA-c, and each site is pre- First, 12 NAVs are set, corresponding to different spatial angle ranges, such as 12 NAVs of STA-a. They are NAV-a1, NAV-a2, NAV-a3, NAV-a4, NAV-a5, NAV-a6, NAV-a7, NAV-a8, NAV-a9, NAV-a10, NAV-a11, NAV-a12, corresponding spatial angle range Shown in Figure 7 are a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12;
  • the 12 NAVs of STA-b are NAV-b1, NAV-b2, NAV-b3, NAV-b4, and NAV-b5, respectively.
  • the range of spatial angles required is b1, b2, b3, b4, b5, b6, b7, b8, as shown in Fig. 7, respectively.
  • NAVs of STA-c are NAV-c1, NAV-c2, NAV-c3, NAV-c4, NAV-c5, NAV-c6, NAV-c7, NAV-c8, NAV-c9, NAV-c10, NAV-c11, NAV-c12, the corresponding spatial angle range is c1, c2, c3, c4, c5, as shown in Figure 7, respectively.
  • C6, c7, c8, c9, c10, c11, c12; in this embodiment, all of the above NAV values are initial Initialize to 0 (one or more of them can be set to take a valid value as needed).
  • STA-a initiates transmission to STA-b
  • STA-c corresponds to NAV-c10.
  • the radio frame i of the interest, the spatial angle of the arrival direction of the radio frame i is c10, clockwise
  • the angle of the space in which the rotation is 30 degrees is in the range of c9, and the angle of the space after rotating 30 degrees counterclockwise
  • the degree range is c11, then the STA-c utilizes the channel reservation period information included in the received radio frame i.
  • the space where the arrival direction of the radio frame i is located The angle range is c4, and the space angle range after rotating 30 degrees clockwise is c5, counterclockwise rotation After 30 degrees, the spatial angle range is c3, then STA-c uses the received radio frame j to contain Channel reservation period information update NAV-c3, NAV-c4 and NAV-c5, NAV-c3, NAV-c4 The range of spatial angles corresponding to NAV-c5 remains unchanged.
  • the channel reservation corresponding to STA-a is Segment i, during this time period, STA-c cannot perform data in the spatial angle range c9, c10 and c11 Transmission; according to the radio frame j sent by STA-b to STA-a, the channel reservation corresponding to STA-b is known.
  • Period j during which STA-c is not allowed to perform data in spatial angle ranges c3, c4 and c5 Transmission; if the channel reservation period i and the channel reservation period j coincide, then in the coincident period STA-c cannot perform data in the spatial angle range c3, c4, c5, c9, c10 and c11 transmission.
  • the spatial angle range corresponding to the remaining 6 NAVs can be transmitted at any time.
  • an embodiment of the present invention further provides a site device, as shown in FIG. 8.
  • the indication includes: a NAV configuration module and a data sending module, wherein:
  • the NAV configuration module 10 is configured to carry according to the arrival direction of the received radio frame and the radio frame.
  • the channel reservation period information of the band is configured with the NAV; or, the corresponding set space angle range is pre-configured One or more NAVs;
  • the data sending module 20 is configured to take the RMS value of the NAV saved in the NAV configuration module 10. a space outside the range of the corresponding spatial angle, forming a beam for data transmission; or, in NAV
  • the configuration module 10 saves the spatial angle range corresponding to the NAV of the specific value, forming a beam into the Line data transfer.
  • the NAV taking the RMS value is a non-zero NAV; taking a specific value NAV is a NAV with a value of zero.
  • the NAV configuration module 10 is further configured to carry the received radio frame.
  • the channel reservation period information value of the band is configured as the value of the NAV; it is also configured to reach the reach of the radio frame Rotating the first offset angle clockwise and the corresponding space after rotating the second offset angle counterclockwise
  • the angular range is configured as the spatial angular range corresponding to the NAV.
  • the NAV configuration module 10 is further configured to determine the received radio frame. Whether the arrival direction matches the saved spatial angle range corresponding to the NAV of the valid value, if The direction of arrival of the received radio frame and the spatial angle of all saved NAVs that take the rms value If the matching does not match, configure a new NAV; if all the NAVs of the valid values are saved by the site, If there is a matching in the spatial angle range with the arrival direction of the received radio frame, it is determined whether Update the value of the matching NAV.
  • the NAV configuration module 10 is further configured to be effective when the configuration is saved.
  • the direction of arrival of the radio frame on which the spatial angular range corresponding to the value of the NAV is based and the received radio frame When the arrival direction angle differs by more than the set threshold, it is determined that there is no match; otherwise, it is determined to be a match.
  • the NAV configuration module 10 is further configured to satisfy the following conditions: The value of the assigned NAV is updated: the matching NAV indicates that the channel reservation end time is earlier than the The channel reservation end time indicated by the channel reservation period information carried by the received radio frame.
  • the NAV configuration module 10 is further configured to receive the received wireless frame. The arrival direction and the channel reservation period information carried by the radio frame, and update the set space angle range pair The value of the NAV should be.
  • the NAV configuration module 10 is further configured to set a spatial angular range If the arrival direction of the radio frame received by the station is included, if the NAV corresponding to the spatial angle range is set The indicated channel reservation end time is earlier than the channel reservation period information indication carried by the received radio frame When the channel reservation end time is expired, the value of the NAV is updated.
  • the NAV configuration module 10 is further configured to update the value of the NAV. Corresponding to the spatial angle range pointed to by the direction of arrival of the received radio frame by 180 degrees The value of NAV is updated.
  • the NAV configuration module 10 is further configured to update the value of the NAV.
  • the direction of arrival of the received radio frame is rotated clockwise by the first predetermined angle NAV corresponding to the range of degrees and/or the range of spatial angles to which the second preset angle is rotated counterclockwise
  • the value is updated.
  • the value of the updated NAV is a channel carried by the received radio frame.
  • the data sending module 20 is further configured to save the non-zero value. Before the channel reservation end time indicated by the NAV is reached, the corresponding NAV corresponding to the non-zero value is saved. A space outside the range of angles forms a beam for data transmission.
  • the NAV configuration module 10 may be a site device.
  • CPU Central Processing Unit
  • MPU Micro Processing Unit
  • DSP Digital Signal Processor
  • the data transmitting module 20 can be implemented by a chip having a communication function in the site device.
  • an embodiment of the present invention further provides a computer readable storage medium, where the storage medium
  • the quality includes a set of instructions for performing the data transmitting method according to the embodiment of the present invention.
  • embodiments of the present invention can be provided as a method, system, Or a computer program product. Accordingly, the present invention may employ hardware embodiments, software embodiments, or junctions. In the form of an embodiment of the software and hardware aspects. Moreover, the invention may be employed in one or more of its Computer-available storage media (including but not limited to disk) containing computer-usable program code A form of computer program product embodied on a memory and optical storage, etc.).
  • Computer-available storage media including but not limited to disk
  • computer-usable program code A form of computer program product embodied on a memory and optical storage, etc.
  • the present invention is directed to a method, apparatus (system), and computer program in accordance with an embodiment of the present invention
  • the flow chart and/or block diagram of the product is described. It should be understood that the flow can be implemented by computer program instructions
  • These computer program instructions can be provided to a general purpose computer, a special purpose computer, An embedded processor or processor of another programmable data processing device to create a machine such that Instructions executed by a processor of a computer or other programmable data processing device are generated for implementation
  • These computer program instructions can also be stored in a bootable computer or other programmable data processing
  • the device is readable in a computer readable memory that operates in a particular manner
  • the instructions in the reservoir produce an article of manufacture comprising an instruction device implemented in a flow chart A function specified in a block or blocks of a process or multiple processes and/or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device. Enabling a series of operational steps on a computer or other programmable device to produce a computer implementation Processing, such that instructions executed on a computer or other programmable device are provided for implementation in the stream a process or a process and/or a block diagram of a function specified in a box or blocks step.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé de transmission de données et sur un dispositif de station. Le procédé comprend les étapes suivantes : la station configure des vecteurs d'affectation de réseau NAV selon des directions d'arrivée de trames radio reçues et des informations de durée de réservation de canal transportées par les trames radio, et la station met en forme des faisceaux pour une transmission de données dans l'espace en plus de l'espace de plage d'angles correspondant à des valeurs valides des NAV stockés par la station elle-même ; ou la station configure précédemment un ou plusieurs NAV correspondant à un espace préréglé de plage d'angles, et met en forme des faisceaux pour une transmission de données à l'intérieur de l'espace de plage d'angles correspondant à des valeurs spécifiques des NAV stockés par la station elle-même.
PCT/CN2014/074679 2013-04-02 2014-04-02 Procédé de transmission de données, dispositif de station et support de stockage lisible par ordinateur WO2014161496A1 (fr)

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