CN103095426B - Information channel measurement feedback requesting method, station device and service set system - Google Patents
Information channel measurement feedback requesting method, station device and service set system Download PDFInfo
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- CN103095426B CN103095426B CN201110337719.0A CN201110337719A CN103095426B CN 103095426 B CN103095426 B CN 103095426B CN 201110337719 A CN201110337719 A CN 201110337719A CN 103095426 B CN103095426 B CN 103095426B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides an information channel measurement feedback requesting method, a station device and a service set system, and relates to the field of communication. The bit number for placing an algebraic interpretive dialogue (AID) in a station information field is increased. The information channel measurement feedback requesting method includes that a sending port station generates an empty package notification which contains the station information field, wherein a bit position which is used for indicating relevant identification in the station information field is at least 13 bits and the sending port station sends the empty package notification to a receiving port station so that the receiving port station judges whether to conduct information channel measurement feedback according to the relevant identification which is indicated in the station information field. The method is used for measuring an information channel.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of channel measurement feedback requesting method, site device and services set system.
Background technology
VHT sounding protocol (Very high throughput sounding protocol, superelevation throughput detection mechanism) be the new technology introduced in 802.11ac draft, it is the channel detecting mechanism that one is present between beam forming promoter (Beamformer) and beam forming recipient (Beamformee).
The effect of NDPA (Null Data Pocket Announcement, the empty bag notice) frame of beam forming promoter is that measurement feedback is carried out in the corresponding STA of request (Enabling station, website).After STA receives the NDPA frame from beam forming promoter, MAC (Medium access control in NDPA frame can be checked one by one, medium education) access identifier field in site information (STA Info) field of wrapping value whether with oneself AID (application identifier, association identification) identical, if find identical AID, basis feeds back classification (Feedback Type) field accordingly and fluxion (NC Index) field carries out follow-up measurement, and by superelevation throughput beam forming compressed package (VHT, Compressed Beamforming) feed back corresponding metrical information to beam forming promoter, otherwise then mean and can not find identical AID, so this STA is not at the row of requested feedback person.
Wherein, NDPA frame mac frame form is as shown in table 1 arranges as shown in table 2 with station information fields.
Table 1
Table 2
The corresponding STA of a STA Info field in NDPA frame mac frame form, website judges whether to need to carry out follow-up measurement according to this AID field.But when supporting to indicate the website of channel measurement in the network more than 4096 websites, the bit number for placing AID in station information fields is not enough.
Summary of the invention
Embodiments of the invention provide a kind of channel measurement feedback requesting method, site device and services set system, and the bit number for placing AID in station information fields increases.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, a kind of channel measurement feedback requesting method is provided, comprises:
The sky bag generated containing station information fields notifies; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
Described sky bag notice is sent, so that described receiving terminal website judges whether to carry out channel measurement feedback according to the association identification indicated in described station information fields to receiving terminal website.
On the one hand, a kind of channel measurement feedback requesting method is provided, comprises:
The sky bag received containing station information fields notifies; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
Resolve described station information fields, judge whether self carries out channel measurement feedback according to the association identification indicated in described station information fields.
On the one hand, a kind of transmitting terminal site device is provided, comprises:
Generation unit, for generating the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
Transmitting element, for sending described sky bag notice to receiving terminal website, so that described receiving terminal website judges whether to carry out channel measurement feedback according to the association identification indicated in described station information fields.
On the one hand, a kind of receiving end station point apparatus is provided, comprises:
Receiving element, for receiving the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
According to the association identification indicated in described station information fields, resolution unit, for resolving described station information fields, judges whether self carries out channel measurement feedback.
On the one hand, a kind of services set system is provided, comprises:
Transmitting terminal site device, for generating the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits; Described sky bag notice is sent to receiving terminal website;
Receiving end station point apparatus, for receiving the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits; Resolve described station information fields, judge whether self carries out channel measurement feedback according to the association identification indicated in described station information fields.
Channel measuring method channel measurement feedback requesting method, site device and services set system that the embodiment of the present invention provides, the sky bag that transmitting terminal website generates containing station information fields notifies; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits; Transmitting terminal website sends described sky bag notice, so that described receiving terminal website judges whether to carry out channel measurement feedback according to the association identification indicated in described station information fields to receiving terminal website.Like this, the bit being used to indicate association identification AID in station information fields becomes at least 13 bits, at least 1 bit is added relative to prior art, the corresponding increase of amount of storage of AID, can support in the network more than 4096 websites, use empty bag notice to realize the notice of channel measurement website.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of channel measurement feedback requesting method flow chart that Fig. 1 provides for the embodiment of the present invention;
The another kind of channel measurement feedback requesting method flow chart that Fig. 2 provides for the embodiment of the present invention;
Another channel measurement feedback requesting method flow chart that Fig. 3 provides for the embodiment of the present invention;
The transmitting terminal site device structural representation that Fig. 4 provides for the embodiment of the present invention;
The receiving end station point apparatus structural representation that Fig. 5 provides for the embodiment of the present invention;
The services set system configuration schematic diagram that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The channel measurement feedback requesting method that the embodiment of the present invention provides, as shown in Figure 1, its step comprises:
The sky bag that S101, transmitting terminal website generate containing station information fields notifies; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits.
S102, transmitting terminal website send this sky bag notice, so that receiving terminal website judges whether to carry out channel measurement feedback according to the association identification indicated in station information fields to receiving terminal website.
In addition, can also comprise in station information fields: feedback classification and fluxion.
Like this, the bit being used to indicate association identification AID in station information fields becomes at least 13 bits, at least 1 bit is added relative to prior art, the corresponding increase of amount of storage of AID, can support in the network more than 4096 websites, use empty bag notice to realize the notice of channel measurement website.
The channel measurement feedback requesting method that another embodiment of the present invention provides, as shown in Figure 2, its step comprises:
The sky bag that S201, receiving terminal website receive containing station information fields notifies; Wherein, the bit being used to indicate association identification in station information fields is at least 13 bits.
S202, receiving terminal website resolve this station information fields, judge whether self carries out channel measurement feedback according to the association identification indicated in this station information fields.
Like this, the bit being used to indicate association identification AID in station information fields becomes at least 13 bits, at least 1 bit is added relative to prior art, the corresponding increase of amount of storage of AID, can support in the network more than 4096 websites, use empty bag notice to realize the notice of channel measurement website.
The channel measurement feedback requesting method that further embodiment of this invention provides, as shown in Figure 3, its step comprises:
The sky bag that S301, transmitting terminal website generate containing station information fields notifies.Wherein, the bit being used to indicate association identification in station information fields is at least 13 bits.
Further, also comprise in this station information fields: feedback classification and fluxion.
The bit number that this station information fields takies is at least 16.Example, the station information fields of generation can be as shown in table 3, and the bit that station information fields takies is 16; Wherein, by 13 bit instruction association identification, by 1 bit indication feedback classification, by 2 bit instruction fluxions.Concrete, in 16 bits that this station information fields takies, the 13 bit instruction association identification of the 0th ~ 12nd; The 1 bit indication feedback classification of the 13rd; The 2 bit instruction fluxions of the 14th ~ 15th.
Table 3
Or the station information fields of generation can be as shown in table 4, the bit that station information fields takies is 16; Wherein, by 13 bit instruction association identification, by 1 bit indication feedback classification, by 2 bit instruction fluxions.Concrete, in 16 bits that this station information fields takies, 1 bit of 12 bits of the 0th ~ 11st and the 13rd indicates association identification jointly; The 1 bit indication feedback classification of the 12nd; The 2 bit instruction fluxions of the 14th ~ 15th.It should be noted that, 12 bits of the arbitrary bit in the 13rd ~ 15th 3 bits and the 0th ~ 11st can be selected jointly to indicate association identification.
Table 4
In the channel measurement feedback requesting method that the embodiment of the present invention provides, also the existing structure of NDPA frame can be changed, by the adjustment to each sign in STA info field, reach the object increasing AID indications amount of storage, meanwhile, new sign can be added in STA info field, give STA info field more deixis.
Example, the station information fields of generation can be as shown in table 5, also comprises: one or more in feedback granularity, effectively duration, signal to noise ratio.Such as, the bit that the station information fields of generation takies is 24; Wherein, by 16 bits instruction association identification, one or more with in all the other bit indication feedback classifications, fluxion, feedback granularity, effectively duration, signal to noise ratio.Like this, STA info field just adds more deixis.
Table 5
Example, the station information fields of generation can be as shown in table 6, also comprises: feedback granularity and signal to noise ratio.Such as, the bit that the station information fields of generation takies is 24; Wherein, 16 bit instruction association identification of the 0th ~ 15th, the 1 bit indication feedback classification of the 16th, the 2 bit indication feedback fluxions of the 17th ~ 18th, the 2 bit indication feedback granularities of the 19th ~ 20th, the 3 bit instruction signal to noise ratios of the 21st ~ 23rd.
Table 6
S302, transmitting terminal website send this sky bag notice to receiving terminal website.
The sky bag that S303, receiving terminal website receive containing station information fields notifies.
Whether the value be used to indicate in the bit of association identification in S304, receiving terminal website parsing station information fields is identical with self association identification.
If station information fields as shown in Table 5 above, then receiving terminal website according to station information fields feedback granularity, effectively duration, signal to noise ratio, carry out follow-up channel measurement and measurement data is fed back, specific as follows:
When also comprising feedback granularity in station information fields, after receiving terminal website determines self to need to carry out channel feedback, the granularity according to feedback granularity instruction carries out channel measurement.
When also comprising effective duration in station information fields, receiving terminal website preserves measurement data in the time range that can indicate at effective duration after determining self to need to carry out channel feedback.
When also comprising signal to noise ratio in station information fields, after receiving terminal website determines self to need to carry out channel feedback, when the signal to noise ratio of the channel measurement signal to noise ratio be discontented with indicated by bit that toe shows signal to noise ratio requires, abandon measurement data.
S305, receiving terminal from as after request measuring object, feed back corresponding measurement data by superelevation throughput beam forming compressed package to transmitting terminal website according to determining in measuring process subsequently.
The channel measurement feedback requesting method that the embodiment of the present invention provides, the bit being used to indicate association identification AID in station information fields becomes at least 13 bits, at least 1 bit is added relative to prior art, the corresponding increase of amount of storage of AID, can support in the network more than 4096 websites, use empty bag notice to realize the notice of channel measurement website.
Corresponding said method embodiment, the transmitting terminal site device 40 that the embodiment of the present invention provides, can apply in the above-mentioned methods, as shown in Figure 4, comprising:
Generation unit 401, for generating the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in station information fields is at least 13 bits.
Transmitting element 402, for sending this sky bag notice to receiving terminal website, so that receiving terminal website judges whether to carry out channel measurement feedback according to the association identification indicated in station information fields.
The station information fields that this generation unit generates not only comprises the bit being used to indicate association identification, can also comprise: feedback classification and fluxion.
The bit number that the station information fields that this generation unit 401 generates takies is at least 16.
Exemplary, in 16 bits that the station information fields that generation unit 401 generates takies, the 13 bit instruction association identification of the 0th ~ 12nd; The 1 bit indication feedback classification of the 13rd; The 2 bit instruction fluxions of the 14th ~ 15th.
Or, in 16 bits that the station information fields that generation unit 301 generates takies, the 12 bit instruction association identification of the 0th ~ 11st; The 1 bit indication feedback classification of the 12nd; The 1 bit instruction association identification of the 13rd; The 2 bit instruction fluxions of the 14th ~ 15th.
Or the bit that the station information fields of generation takies is 24; Wherein, by 16 bits instruction association identification, one or more with in all the other bit indication feedback classifications, fluxion, feedback granularity, effectively duration, signal to noise ratio.
Like this, the bit being used to indicate association identification AID in the station information fields that generation unit generates becomes at least 13 bits, at least 1 bit is added relative to prior art, the corresponding increase of amount of storage of AID, can support in the network more than 4096 websites, use empty bag notice to realize the notice of channel measurement website.
Corresponding said method embodiment, the receiving end station point apparatus 50 that the embodiment of the present invention provides, can apply in the above-mentioned methods, as shown in Figure 5, comprising:
Receiving element 501, for receiving the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in station information fields is at least 13 bits.
According to the association identification indicated in this station information fields, resolution unit 502, for resolving this station information fields, judges whether self carries out channel measurement feedback.
The bit number that the station information fields that receiving element 501 receives takies is at least 16.
Further, the bit being used to indicate other bit of feedback sort He being used to indicate fluxion can also be comprised in the station information fields that receiving element 501 receives.
Exemplary, the bit that station information fields takies can be 16; Wherein, by 13 bit instruction association identification, by 1 bit indication feedback classification, by 2 bit instruction fluxions.
If the station information fields received takies 16 bits, and 1 bit of 12 bits of the 0th ~ 11st and the 13rd indicates association identification jointly; The 1 bit indication feedback classification of the 12nd; 14th ~ 15th 2 bits instruction fluxion time, resolution unit 502, for resolving described information field.
Further, also comprise in the station information fields that receiving element 501 receives: one or more in feedback granularity, effectively duration, signal to noise ratio.
When also comprising feedback granularity in the station information fields that receiving element 501 receives, after the resolution unit of receiving terminal website determines self to need to carry out channel feedback, the granularity according to feedback granularity instruction carries out channel measurement.
When being also surrounded by effect duration in the station information fields that receiving element 501 receives, the resolution unit of receiving terminal website preserves measurement data in the time range that can indicate at effective duration after determining self to need to carry out channel feedback.
When also comprising signal to noise ratio in the station information fields that receiving element 501 receives, after the resolution unit of receiving terminal website determines self to need to carry out channel feedback, when the signal to noise ratio of the channel measurement signal to noise ratio be discontented with indicated by bit that toe shows signal to noise ratio requires, abandon measurement data.
The receiving end station point apparatus that the embodiment of the present invention provides, the bit being used to indicate association identification AID in the station information fields received becomes at least 13 bits, at least 1 bit is added relative to prior art, the corresponding increase of amount of storage of AID, can support in the network more than 4096 websites, use empty bag notice to realize the notice of channel measurement website.
The services set system that the embodiment of the present invention provides, as shown in Figure 6, comprising:
Transmitting terminal site device 601, for generating the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in station information fields is at least 13 bits; Empty bag notice is sent to receiving terminal website 602;
Receiving end station point apparatus 602, for receiving the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in station information fields is at least 13 bits; Resolve station information fields, judge whether self carries out channel measurement feedback according to the association identification indicated in station information fields.
Transmitting terminal site device 601 in the present embodiment is identical with transmitting terminal site device 40 structure in a upper embodiment, and receiving end station point apparatus 602 is identical with receiving end station point apparatus 50 structure in a upper embodiment, does not repeat them here.
The services set system that the embodiment of the present invention provides, the bit being used to indicate association identification AID in station information fields becomes at least 13 bits, at least 1 bit is added relative to prior art, the corresponding increase of amount of storage of AID, can support in the network more than 4096 websites, use empty bag notice to realize the notice of channel measurement website.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (21)
1. a channel measurement feedback requesting method, is characterized in that, comprising:
The sky bag generated containing station information fields notifies; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
Described sky bag notice is sent, so that described receiving terminal website judges whether to carry out channel measurement feedback according to the association identification indicated in described station information fields to receiving terminal website.
2. method according to claim 1, is characterized in that, the bit number that described station information fields takies is at least 16.
3. method according to claim 2, is characterized in that,
Also comprise in described station information fields: feedback classification and fluxion.
4. method according to claim 3, is characterized in that, the bit that described station information fields takies is 16; Wherein, by 13 bit instruction association identification, by 1 bit indication feedback classification, by 2 bit instruction fluxions.
5. method according to claim 2, is characterized in that,
Also comprise in described station information fields: one or more in feedback granularity, effectively duration, signal to noise ratio.
6. a channel measurement feedback requesting method, is characterized in that, comprising:
The sky bag received containing station information fields notifies; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
Resolve described station information fields, judge whether self carries out channel measurement feedback according to the association identification indicated in described station information fields.
7. method according to claim 6, is characterized in that, the bit number that described station information fields takies is at least 16.
8. method according to claim 7, is characterized in that,
Also comprise in described station information fields: feedback classification and fluxion.
9. method according to claim 8, is characterized in that, the bit that described station information fields takies is 16; Wherein, by 13 bit instruction association identification, by 1 bit indication feedback classification, by 2 bit instruction fluxions.
10. method according to claim 7, is characterized in that,
Also comprise in described station information fields: one or more in feedback granularity, effectively duration, signal to noise ratio.
11. 1 kinds of transmitting terminal site device, is characterized in that, comprising:
Generation unit, for generating the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
Transmitting element, for sending described sky bag notice to receiving terminal website, so that described receiving terminal website judges whether to carry out channel measurement feedback according to the association identification indicated in described station information fields.
12. devices according to claim 11, is characterized in that, the bit number that the described station information fields that described generation unit generates takies is at least 16.
13. devices according to claim 12, is characterized in that, also comprise: feedback classification and fluxion in the described station information fields that described generation unit generates.
14. devices according to claim 13, is characterized in that, the bit that the described station information fields that described generation unit generates takies is 16; Wherein, by 13 bit instruction association identification, by 1 bit indication feedback classification, by 2 bit instruction fluxions.
15. devices according to claim 12, is characterized in that, also comprise in the described station information fields that described generation unit generates: one or more in feedback granularity, effectively duration, signal to noise ratio.
16. 1 kinds of receiving end station point apparatus, is characterized in that, comprising:
Receiving element, for receiving the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits;
According to the association identification indicated in described station information fields, resolution unit, for resolving described station information fields, judges whether self carries out channel measurement feedback.
17. devices according to claim 16, is characterized in that,
The bit number that the described station information fields that described receiving element receives takies is at least 16.
18. devices according to claim 17, is characterized in that,
Also comprise in the described station information fields that described receiving element receives: feedback classification and fluxion.
19. devices according to claim 18, is characterized in that, the bit that the described station information fields that described receiving element receives takies is 16; Wherein, by 13 bit instruction association identification, by 1 bit indication feedback classification, by 2 bit instruction fluxions.
20. devices according to claim 18, is characterized in that, also comprise in the described station information fields that described receiving element receives: one or more in feedback granularity, effectively duration, signal to noise ratio.
21. 1 kinds of services set systems, is characterized in that, comprising:
Transmitting terminal site device, for generating the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits; Described sky bag notice is sent to receiving end station point apparatus;
Receiving end station point apparatus, for receiving the sky bag notice containing station information fields; Wherein, the bit being used to indicate association identification in described station information fields is at least 13 bits; Resolve described station information fields, judge whether self carries out channel measurement feedback according to the association identification indicated in described station information fields.
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| CN201110337719.0A CN103095426B (en) | 2011-10-31 | 2011-10-31 | Information channel measurement feedback requesting method, station device and service set system |
| PCT/CN2012/076500 WO2013063935A1 (en) | 2011-10-31 | 2012-06-06 | Channel measurement feedback requesting method, station device, and service set system |
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| CN201110337719.0A CN103095426B (en) | 2011-10-31 | 2011-10-31 | Information channel measurement feedback requesting method, station device and service set system |
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| MY201372A (en) * | 2016-05-10 | 2024-02-20 | Huawei Tech Co Ltd | Radio frame sending and receiving methods and apparatus |
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| WO2011103367A1 (en) * | 2010-02-17 | 2011-08-25 | Qualcomm Incorporated | Method and apparatus for supporting adaptive channel state information feedback rate in multi-user communication systems |
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| US20110199946A1 (en) * | 2010-02-17 | 2011-08-18 | Qualcomm Incorporated | Method and apparatus for supporting adaptive channel state information feedback rate in multi-user communication systems |
| CN102201891B (en) * | 2011-05-03 | 2015-07-22 | 中兴通讯股份有限公司 | Wireless frame transmission method and device |
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| IEEE P802.11 Wireless LANs 11ac NDPA frame format;IEEE;<<IEEE 802.11>>;20110314;全文 * |
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