CN103916386A - Data sending and receiving method - Google Patents
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- CN103916386A CN103916386A CN201410094109.6A CN201410094109A CN103916386A CN 103916386 A CN103916386 A CN 103916386A CN 201410094109 A CN201410094109 A CN 201410094109A CN 103916386 A CN103916386 A CN 103916386A
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Abstract
The invention discloses a data sending method. The method includes the steps that control fields of shared MAC information fields carrying indication/control information are generated on a physical layer, and the shared MAC information fields comprise sending station identification and information used for calculating distribution vectors of a network; the control fields and data fields comprising one or more continuous subfields are aggregated into physical subframes; when the physical subframes are sent, the control fields are modulated on the physical layer. The invention further discloses a data receiving method.
Description
Technical field
The invention belongs to mobile communication technology field, relate in particular to a kind of data and send and data receive method.
Background technology
802.11 standard definitions two kinds of media interviews forms: distributed coordination function (DCF) and centralized coordination function (PCF).DCF prevents (CSMA/CA) agreement based on csma/conflict, and is compulsory.Under DCF pattern, access right is obtained in competition by 802.11 main frames, and in sending radio frames, other websites can not transmit.If other websites need transmission, this website will be waited for until channel idle.As the condition of access media, media access control (MAC) layer checks the value of its network allocation vector (NAV), and this exists in each website, is used for representing that former frame need to send the time of this frame.NAV must be set to zero before website attempts to send frame.Before transmission frame, website calculates according to frame length and transmission rate the required time of frame that sends.Website is placed on the value that represents this time in duration (Duration) territory of frame head.When website is received after this frame, check that Duration territory conduct arrange the basis of corresponding NAV.This operation will be the reserved medium of transmitting station.
Being achieved as follows of virtual carrier sense mechanism in 802.11a/n wireless local area network (WLAN) system:
User site is received after physical layer convergence sublayer (PLCP) protocol Data Unit (PPDU), first need to untie SIGNAL domain information, then learn the modulation system in current data territory according to Rate or MCS information, then data portion is carried out demodulation and obtains the Duration information (NAV) of MAC head.For example, in the MAC of polymerization service data unit (Aggregate MAC Service Data Unit, A-MSDU), only have a shared MAC head, the Durtion/ID field of the inside is set NAV value.In the Medium Access Control (MAC) Protocol Data Unit (Aggregate MAC Protocol Data Unit, A-MPDU) of polymerization, comprise multiple MPDU, there are multiple MAC heads, agreement specifies that the NAV value setting of multiple MAC heads is consistent.Show that each MPDU sets identical NAV.
But, some ultrahigh speed wireless local area network (WLAN) system adopts sub-channel modulation mode, other website except transceiver station cannot be known the sub-channel modulation mode that it adopts, and therefore cannot carry out demodulation to its MAC header, and the numerical value that also just cannot obtain Duration territory upgrades NAV.
In addition, in some ultrahigh speed wireless local area network (WLAN) system, when receiving station (such as AP) carries out data interaction with multiple transmitting stations simultaneously, even if receiving station has been known the modulation system that multiple transmitting stations of communicating with are used, but because it can only untie the MCS information of the leading and SIGNAL domain information of PLCP or HT-SIGNAL, and cannot know which transmitting station current PPDU belongs to, also just cannot carry out demodulation to current PPDU.
Summary of the invention
In view of this, technical problem to be solved by this invention is to provide a kind of data and sends and data receive method, the numerical value that makes receiving station in ultrahigh speed wireless local area network (WLAN) system can obtain Duration territory upgrades NAV, and make receiving station can know the transmitting station of current PPDU, thereby current PPDU is carried out to demodulation.
The embodiment of the present invention provides a kind of data transmission method for uplink, comprising:
In physical layer, generate the control field that comprises the shared MAC information field that carries instruction/control information, described shared MAC information field comprises transmitting station mark and the information for computing network allocation vector;
By described control field and comprise that the data field of one or more continuous son fields aggregates into physics subframe;
In the time sending described physics subframe, in physical layer, described control field is modulated.
In some optional embodiments, described data field is by a business son field, at least one superelevation Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field of handling up, and an afterbody is filled son field composition.
In some optional embodiments, described UHT-MPDU son field is by a MAC field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence field composition.
In some optional embodiments, a described MAC field comprises length field, for carrying the length information of described UHT-MPDU; And/or
A described MAC field comprises 1 territory, address, for carrying receiving station mark.
In some optional embodiments, described control field also comprises receiving station mark.
In some optional embodiments, described transmitting station is designated the address of transmitting station; Described receiving station is designated the address of receiving station.
In some optional embodiments, said method also comprises:
Generate long preambles HT-LTF field; In the time aggregating into physics subframe, described HT-LTF field, described control field and described data field are aggregated into physics subframe; Or
Generate signal HT-SIG field; In the time aggregating into physics subframe, described HT-SIG field, described control field and described data field are aggregated into physics subframe; Or
Generate long preambles HT-LTF field and signal HT-SIG field; In the time aggregating into physics subframe, described HT-LTF field, HT-SIG field, described control field and described data field are aggregated into physics subframe.
In some optional embodiments, said method also comprises:
Generate preamble field;
Generate signal HT-SIG field, data long preambles field and expansion long preambles field;
Described HT-SIG field, data long preambles field, expansion long preambles field and a physics subframe that comprises described control field and described data field aggregating into are aggregated into the first subframe;
At least one the physics subframe aggregating into aggregates into the second subframe, and wherein, the physics subframe that aggregates into the second subframe comprises described control field and described data field; Or the physics subframe that aggregates into the second subframe comprises described control field and described data field, also comprise long preambles HT-LTF field and/or signal HT-SIG field;
Described preamble field, the first subframe and the second subframe are aggregated into physical layer superframe;
In the time sending described the first subframe and the second subframe, in physical layer, described control field is modulated.
The embodiment of the present invention also provides a kind of data receive method, comprising:
While receiving physics subframe, untie in physical layer the control field that physics subframe comprises; Described control field comprises the shared MAC information field that carries instruction/control information, and described shared MAC information field comprises transmitting station mark and the information for computing network allocation vector;
Obtain address information and the corresponding modulation system thereof of network allocation vector information and transmitting station;
Upgrade network allocation vector and carry out subsequent demodulation.
In some optional embodiments, in described physics subframe, also comprise:
Comprise the data field of one or more continuous son fields;
Described data field is by a business son field, at least one superelevation Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field of handling up, and an afterbody is filled son field composition.。
In some optional embodiments, described UHT-MPDU son field is by a MAC field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence field composition.
In some optional embodiments, a described MAC field comprises length field, for carrying the length information of described UHT-MPDU; And/or
A described MAC field comprises 1 territory, address, for carrying described receiving station mark.
In some optional embodiments, described control field also comprises receiving station mark.
In some optional embodiments, described transmitting station is designated the address of transmitting station; Described receiving station is designated the address of receiving station.
In some optional embodiments, described physics subframe is aggregated into by long preambles HT-LTF field, described control field and described data field; Or
Described physics subframe is aggregated into by signal HT-SIG field, described control field and described data field; Or
Described physics subframe aggregates into physics subframe by long preambles HT-LTF field, signal HT-SIG field, described control field and described data field.
figure of description
Fig. 1-1,1-2 are a kind of structural representations of optional physics subframe;
Fig. 2-1,2-2 are respectively the structural representations of another kind of optional physics subframe;
Fig. 3-1,3-2 are respectively the structural representations of two kinds of optional UHT-MPDU fields;
Fig. 4,5,6 is respectively the structural representation of another three kinds of optional physics subframes;
Fig. 7 is a kind of structural representation of optional physical layer superframe;
Fig. 8,9,10,11 is respectively the schematic diagram of four kinds of optional devices that generate physics subframe;
Figure 12 is a kind of schematic diagram of device of optional generation physical layer superframe.
Embodiment
The numerical value that can obtain Duration territory for realizing the receiving station making in ultrahigh speed wireless local area network (WLAN) system upgrades NAV, and make receiving station can know the transmitting station of current PPDU, thereby current PPDU is carried out to demodulation, on the basis of physical layer frame structure of having used for reference existing 802.11 specifications, a kind of brand-new physical layer subframe structure is proposed, as shown in Fig. 1-1, Fig. 1-2.
This physics subframe comprises a control field UHT-SIG and a data field UHT-A-MPDU.
Control field UHT-SIG is made up of shared MAC information (Shared MAC Info) field, reservation (Reserved) field, cyclic check (CRC) field and afterbody (Tail) field of carrying instruction/control information.In Shared MAC Info field, the value for calculating NAV is placed in continue/mark (Duaration/ID) territory, and the address of transmitting station is placed in territory, transmitting station address (TA).
Here Reserved field, crc field and the effect of Tail field and the information of carrying thereof are identical with 802.11n specification, therefore no longer do repeat specification.
Data field UHT-A-MPDU is by a Service field, at least one superelevation Medium Access Control (MAC) Protocol Data Unit (Ultra High Throughput MAC Protocol Data Unit that handles up, UHT-MPDU) field, for the field UHT-MN that each UHT-MPDU field is separated, and a Tail and Pad field composition.
The Service field is here identical with 802.11n specification with the effect of Tail and Pad field and the information of carrying thereof, therefore no longer does repeat specification.
Each UHT-MPDU field is made up of MAC Header field, a MSDU and a FCS of a carrying MAC layer information.Wherein, MAC Header field is by frame control (Frame Control) territory, Address1 territory, address 3(Address3) territory, sequence control (Sequence Control) territory, address 4(Address4) territory, quality control of the business (QoS Control) territory and high-throughput control (HT Control) territory etc. form.
Here Frame Control territory, Address1 territory, Address3 territory, Sequence Control territory, Address4 territory, QoS Control territory and the effect in HT Control territory and the information of carrying thereof in MSDU, FCS and MAC Header are identical with 802.11n specification, therefore no longer do repeat specification.
Each E-MN field is by Reserved territory, and Length territory, CRC territory and delimiter (Delimiter) territory form.
Here Reserved territory, Length territory, CRC territory and the effect in Delimiter territory and the information of carrying thereof are identical with 802.11n specification, therefore no longer do repeat specification.
For the UHT-SIG structure shown in Fig. 1-1, another kind of optional UHT-A-MPDU structure is as shown in Fig. 3-1.Wherein, Length territory is for placing the length information of UHT-MPDU.
By contrasting and can find out with the UHT-A-MPDU shown in Fig. 1-2, in the UHT-A-MPDU shown in Fig. 3-1, owing to there not being UHT-MN field, therefore in the time utilizing this physics subframe to transmit, not only can make receiving station can obtain the address of transmitting station in physical layer, and solve the setting replacement problem of NAV, can also further effectively improve the efficiency of transmission of system.
Fig. 2-1, Fig. 2-2 show another kind of optional physics subframe.Compared with the physics subframe shown in Fig. 1-1, Fig. 1-2, the difference of the physics subframe shown in Fig. 2-1, Fig. 2-2 is, the Address1 territory of carrying receiving station address (RA) information is placed in UHT-SIG field, instead of in the MAC Header of UHT-MPDU field.
Can find out, the MAC information in MAC Header field is determined by UHT-SIG field.The MAC layer information of having placed in UHT-SIG field can again not placed in MAC Header field, contributes to like this to improve the efficiency of transmission of system.
In the time sending described physics subframe, UHT-SIG field is modulated with unified low rate in physical layer.A kind of optional mode is to adopt BPSK, 1/2 code check modulation UHT-SIG field.Receiving station, in the time receiving described physics subframe, first need to be untied UHT-SIG in physical layer, obtains NAV information, thereby can upgrade NAV.When receiving station is untied UHT-SIG, can also obtain address information and the corresponding modulation system thereof of transmitting station, thereby can make receiving station can carry out follow-up demodulation.
While utilizing described physics subframe to communicate in ultrahigh speed WLAN (wireless local area network), can make receiving station can obtain the address of transmitting station in physical layer, therefore non-reception website can solution data frame below.Also solve the setting replacement problem of NAV simultaneously, and compressed the expense of data division, improved efficiency of transmission.
For the UHT-SIG structure shown in Fig. 2-1, another kind of optional UHT-A-MPDU structure is as shown in Fig. 3-1, or as shown in Fig. 3-2.
Compared with the UHT-MPDU field shown in Fig. 3-1, in the UHT-MPDU field shown in Fig. 3-2, increase Address1 territory, for placing the address of receiving station.
It should be noted that, the address of having placed receiving station in the RA field due to UHT-SIG, therefore the object that increases receiving station address in UHT-MPDU is not in order to make receiving terminal learn the destination address of UHT-MPDU, but for receiving terminal can be positioned UHT-MPDU more reliably.
Fig. 4, Fig. 5, Fig. 6 show respectively other three kinds of optional physics subframes.Wherein, HT-LTF field is identical with 802.11n specification with the effect of HT-SIG field and the information of carrying thereof, therefore no longer does repeat specification.
The invention allows for a kind of physical layer superframe structure, as shown in Figure 7.Described superframe is made up of preamble field, the first subframe and the second subframe.
Preamble field is made up of HT patterns of green area short leading (HT-GF-LTF) and the first long preambles (HT-LTF1), the first subframe is made up of HT-SIG field, data long preambles, expansion long preambles and a physics subframe, and the second subframe is made up of at least one physics subframe.Wherein, data long preambles and expansion long preambles are made up of several HT-LTF respectively.
Here HT-GF-LTF, HT-LTF1, data long preambles are identical with 802.11n specification with the expansion effect of long preambles and the information of carrying thereof, therefore no longer do repeat specification.
Based on the form of aforesaid physical layer subframe, the present invention proposes a kind of method that generates physics subframe.The method comprises: generate control field UHT-SIG; Control field UHT-SIG and data field UHT-A-MPDU polymerization are formed to physics subframe.
Here, the effect of transmitting station address TA is a mark.Those skilled in the art can find out completely, and the mode that transmitting station is identified not is unique, can adopt the mode of other non-address to identify transmitting station completely.
The another kind of method that generates physics subframe comprises: generate HT-LTF; Generate control field UHT-SIG; HT-LTF, control field UHT-SIG and data field UHT-A-MPDU polymerization are formed to physics subframe.
The another kind of method that generates physics subframe comprises: generate HT-SIG; Generate control field UHT-SIG; HT-SIG, control field UHT-SIG and data field UHT-A-MPDU polymerization are formed to physics subframe.
The another kind of method that generates physics subframe comprises: generate HT-LTF and HT-SIG; Generate control field UHT-SIG; HT-LTF, HT-SIG, control field UHT-SIG and data field UHT-A-MPDU polymerization are formed to physics subframe.
The present invention also proposes a kind of method that generates physical layer superframe, and the method comprises: generate preamble field; Generate HT-SIG, data long preambles field and expansion long preambles field; HT-SIG field, data long preambles field, expansion long preambles field and the polymerization of a physics subframe are formed to the first subframe; The polymerization of one or more physics subframe is formed to the second subframe; Described preamble field, the first subframe and the second subframe polymerization are formed to physical layer superframe.
Fig. 8 shows a kind of device that generates physics subframe, and this device comprises first module S11 and second unit S12.
First module S11 is used for generating control field UHT-SIG; Second unit S12 is for forming physics subframe by control field UHT-SIG and data field UHT-A-MPDU polymerization.
Fig. 9 shows the another kind of device that generates physics subframe, and this device comprises first module S11, second unit S12 and the 3rd cell S 21.
The 3rd cell S 21 is for generating HT-LTF; Second unit S12 is for forming physics subframe by HT-LTF, control field UHT-SIG and data field UHT-A-MPDU polymerization.
Figure 10 shows the another kind of device that generates physics subframe, and this device comprises first module S11, second unit S12 and the 4th cell S 31.
The 4th cell S 31 is for generating HT-SIG; Second unit S12 is for forming physics subframe by HT-SIG, control field UHT-SIG and data field UHT-A-MPDU polymerization.
Figure 11 shows the another kind of device that generates physics subframe, and this device comprises first module S11, second unit S12, the 3rd cell S 21 and the 4th cell S 31.
Second unit S12 is for forming physics subframe by HT-LTF, HT-SIG, control field UHT-SIG and data field UHT-A-MPDU polymerization.
Figure 12 shows a kind of device that generates physical layer superframe, and this device comprises pilot unit S41, the 5th cell S 42, the first physics subframe unit S43, the first subframe unit S44, the second physics subframe unit S45, the second subframe unit S46 and units of super-frames S47.
Pilot unit S41 is used for generating preamble field; The 5th cell S 42 is for generating HT-SIG field, data long preambles field and expansion long preambles field; The first physics subframe unit S43 is used for generating the first physics subframe; The first subframe unit S44 is for forming the first subframe by described HT-SIG field, data long preambles field, expansion long preambles field and the first physics subframe polymerization.
The second physics subframe unit S45 is used for generating one or more the second physics subframes; The second subframe unit S46 forms the second subframe for one or more the second physics subframe polymerizations that the second physics subframe unit S45 is generated; Units of super-frames S47 is for forming physical layer superframe by described preamble field, the first subframe and the second subframe polymerization.
A kind of mode is preferably that the first physics subframe unit S43 is made up of first module S11 and second unit S12.A kind of optional mode is that the second physics subframe unit S45 is made up of first module S11 and second unit S12.Another kind of optional mode is that the second physics subframe unit S45 is made up of first module S11, second unit S12 and the 3rd cell S 21.Another kind of optional mode is that the second physics subframe unit S45 is made up of first module S11, second unit S12 and the 4th cell S 31.Another kind of optional mode is that the second physics subframe unit S45 is made up of first module S11, second unit S12, the 3rd cell S 21 and the 4th cell S 31.
Those skilled in the art can understand, the various exemplary method step of describing in conjunction with the disclosed embodiments here and device unit all can electronic hardware, software or the combination of the two realize.In order to be clearly shown that the interchangeability between hardware and software, above various exemplary steps and unit are all carried out to description generally with its functional form.This functional be to realize or realize and depend on the design constraint that specific application and whole system are realized with software with hardware.Those skilled in the art can be for each specific application, realize in many ways described functional, but the result of this realization should not be construed as and deviates from scope of the present invention.
Utilize general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logical device, discrete gate or transistor logic, discrete hardware components or the combination in any among them, can realize or carry out the various exemplary unit of describing in conjunction with embodiment disclosed herein.General processor may be microprocessor, but in another kind of situation, this processor may be processor, controller, microcontroller or the state machine of any routine.Processor also may be implemented as the combination of computing equipment, for example, and the microprocessor of the combination of DSP and microprocessor, multi-microprocessor, one or more combination DSP cores or any other this kind of structure.
The software module that step in conjunction with the described method of above-mentioned disclosed embodiment can directly be presented as hardware, carried out by processor or the combination of these two.Software module may be present in the storage media of RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, mobile disk, CD-ROM or any other form well known in the art.A kind of exemplary storage medium is coupled with processor, thus make processor can be from this storage media read message, and can be to this storage media write information.In replacement example, storage media is the part of processor.Processor and storage media may be present in an ASIC.This ASIC may be present in a subscriber station.Replace in example at one, the discrete assembly that processor and storage media can be used as in subscriber station exists.
According to described disclosed embodiment, can make those skilled in the art can realize or use the present invention.To those skilled in the art, the various amendments of these embodiment are apparent, and the general principles of definition here also can do not depart from the scope of the present invention with the basis of purport on be applied to other embodiment.Above-described embodiment is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a data transmission method for uplink, is characterized in that, comprising:
In physical layer, generate the control field that comprises the shared MAC information field that carries instruction/control information, described shared MAC information field comprises transmitting station mark and the information for computing network allocation vector;
By described control field and comprise that the data field of one or more continuous son fields aggregates into physics subframe;
In the time sending described physics subframe, in physical layer, described control field is modulated.
2. the method for claim 1, is characterized in that, described data field is by a business son field, at least one superelevation Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field of handling up, and an afterbody is filled son field composition.
3. method as claimed in claim 2, is characterized in that, described UHT-MPDU son field is by a MAC field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence field composition.
4. method as claimed in claim 3, is characterized in that, a described MAC field comprises length field, for carrying the length information of described UHT-MPDU; And/or
A described MAC field comprises 1 territory, address, for carrying receiving station mark.
5. the method for claim 1, is characterized in that, described control field also comprises receiving station mark.
6. method as claimed in claim 5, is characterized in that, described transmitting station is designated the address of transmitting station; Described receiving station is designated the address of receiving station.
7. the method as described in as arbitrary in claim 1-6, is characterized in that, also comprises:
Generate long preambles HT-LTF field; In the time aggregating into physics subframe, described HT-LTF field, described control field and described data field are aggregated into physics subframe; Or
Generate signal HT-SIG field; In the time aggregating into physics subframe, described HT-SIG field, described control field and described data field are aggregated into physics subframe; Or
Generate long preambles HT-LTF field and signal HT-SIG field; In the time aggregating into physics subframe, described HT-LTF field, HT-SIG field, described control field and described data field are aggregated into physics subframe.
8. method as claimed in claim 7, is characterized in that, also comprises:
Generate preamble field;
Generate signal HT-SIG field, data long preambles field and expansion long preambles field;
Described HT-SIG field, data long preambles field, expansion long preambles field and a physics subframe that comprises described control field and described data field aggregating into are aggregated into the first subframe;
At least one the physics subframe aggregating into aggregates into the second subframe, and wherein, the physics subframe that aggregates into the second subframe comprises described control field and described data field; Or the physics subframe that aggregates into the second subframe comprises described control field and described data field, also comprise long preambles HT-LTF field and/or signal HT-SIG field;
Described preamble field, the first subframe and the second subframe are aggregated into physical layer superframe;
In the time sending described the first subframe and the second subframe, in physical layer, described control field is modulated.
9. a data receive method, is characterized in that, comprising:
While receiving physics subframe, untie in physical layer the control field that physics subframe comprises; Described control field comprises the shared MAC information field that carries instruction/control information, and described shared MAC information field comprises transmitting station mark and the information for computing network allocation vector;
Obtain address information and the corresponding modulation system thereof of network allocation vector information and transmitting station;
Upgrade network allocation vector and carry out subsequent demodulation.
10. method as claimed in claim 9, is characterized in that, in described physics subframe, also comprises:
Comprise the data field of one or more continuous son fields;
Described data field is by a business son field, at least one superelevation Medium Access Control (MAC) Protocol Data Unit UHT-MPDU son field of handling up, and an afterbody is filled son field composition.
11. methods as claimed in claim 10, is characterized in that, described UHT-MPDU son field is by a MAC field, a Medium Access Control (MAC) Service Data Unit field, and a Frame Check Sequence field composition.
12. methods as claimed in claim 11, is characterized in that, a described MAC field comprises length field, for carrying the length information of described UHT-MPDU; And/or
A described MAC field comprises 1 territory, address, for carrying described receiving station mark.
13. methods as claimed in claim 9, is characterized in that, described control field also comprises receiving station mark.
14. methods as claimed in claim 13, is characterized in that, described transmitting station is designated the address of transmitting station; Described receiving station is designated the address of receiving station.
15. methods as described in as arbitrary in claim 9-14, is characterized in that, described physics subframe is aggregated into by long preambles HT-LTF field, described control field and described data field; Or
Described physics subframe is aggregated into by signal HT-SIG field, described control field and described data field; Or
Described physics subframe aggregates into physics subframe by long preambles HT-LTF field, signal HT-SIG field, described control field and described data field.
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| WO2016082230A1 (en) * | 2014-11-29 | 2016-06-02 | 华为技术有限公司 | Virtual carrier sensing method and device |
| CN113365368A (en) * | 2015-09-28 | 2021-09-07 | 纽瑞科姆有限公司 | Apparatus and method for TXOP duration field in PHY header |
| CN113365368B (en) * | 2015-09-28 | 2024-06-07 | 纽瑞科姆有限公司 | Apparatus and method for TXOP duration field in PHY header |
| CN109314606A (en) * | 2016-02-19 | 2019-02-05 | 马维尔国际贸易有限公司 | The confirmation of transmission in WLAN |
| CN113014366A (en) * | 2016-12-14 | 2021-06-22 | 华为技术有限公司 | Control information indication method and network element |
| CN113014366B (en) * | 2016-12-14 | 2022-02-01 | 华为技术有限公司 | Control information indication method and network element |
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