CN103178889B - The method and apparatus that pilot tone sends - Google Patents
The method and apparatus that pilot tone sends Download PDFInfo
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- CN103178889B CN103178889B CN201110439780.6A CN201110439780A CN103178889B CN 103178889 B CN103178889 B CN 103178889B CN 201110439780 A CN201110439780 A CN 201110439780A CN 103178889 B CN103178889 B CN 103178889B
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Abstract
The invention discloses the method and apparatus that a kind of pilot tone sends, wherein method comprises: the pilot tone that network equipment obtains each pilot tone sends pattern; When not sending in the corresponding time of data to the UE of support double antenna and/or 4 antennas, described network equipment sends pattern according to the pilot tone of described each pilot tone and carries out pilot tone transmission; When there being the UE to described support double antenna and/or 4 antennas to send in the corresponding time of data, described network equipment carries out pilot tone transmission according to pilot tone sending strategy.Pilot tone transmission is carried out by adopting pilot tone transmission pattern and pilot tone sending strategy, both can having saved the power that pilot tone takies, the UE of 4 antennas can being avoided again supporting that single double antenna sends the interference of the UE of data and supports that double antenna sends the UE of data to supporting that single antenna sends the interference of the UE of data.
Description
Technical field
The present invention relates to communication technical field, be specifically related to the method and apparatus that a kind of pilot tone sends.
Background technology
Along with the develop rapidly of the communication technology, WCDMA (Wideband Code Division MultipleAccess, Wideband Code Division Multiple Access (WCDMA)) as one of the mainstream technology of 3-G (Generation Three mobile communication system), obtain investigation and application widely in the world.At 3GPP (3rd Generation Partnership Project, third generation Partnership Program) introduce HSDPA (High Speed DownlinkPacket Access, high-speed slender body theory) in order to improve downlink transmission data rate in the Rel-5 version formulated.
2x2MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) technology is introduced in order to improve downlink peak rates further in Rel-7 version.Introduce two carrier wave and 4 ZAP in Rel-9 and Rel-10 version respectively, and multicarrier can with MIMO with the use of.In recent Rel-11 version, the MIMO that upgrades further is being discussed, is upgrading to 4 antennas further in order to promote peak rate further and to increase edges cover by 2 original antenna MIMO.After introducing 4 antennas, in order to estimate that at receiving terminal each antenna port arrives the channel fading factor of reception antenna port, at least need use 4 pilot tones.
In general the function of pilot tone is measured and data demodulates in order to channel estimating.In existing 2x2MIMO technology, use 2 pilot tones, these two pilot tones both in order to channel estimating also in order to demodulation, pilot tone is generally send continuously.When the HSDPA common network of 2x2MIMO technology and non-MIMO, the guidance that NodeB end sends can produce interference to using the UE (User Equipment, subscriber equipment) of non-MIMO frequently, and this is also frequently fall lower powered reason to guidance in Rel-9.
Along with the increase of pilot number, pilot power consumption problem and the interference problem of newly-increased pilot tone to traditional UE become especially severe.Under 4 antenna modes, NodeB at least uses 4 pilot tones, if all pilot tones use identical power, account for gross power 10% by dominant pilot to calculate, so 4 pilot tones are by the power of consumption 40%, this not only can make greatly can reduce in order to the available horsepower of transfer of data, also can cause causing larger interference to traditional UE, influential system performance.Therefore, after introducing 4 antenna technologies, pilot tone delivery plan needs to be optimized.
Summary of the invention
The method and apparatus that the embodiment of the present invention provides a kind of pilot tone to send, can avoid the UE of support 4 antenna to supporting the interference of the UE of single double antenna and supporting that the UE of double antenna is to the interference of the UE of support single antenna.
On the one hand, embodiments provide a kind of method that pilot tone sends, comprising: the pilot tone that network equipment obtains each pilot tone sends pattern; When not sending in the corresponding time of data to the UE of support double antenna and/or 4 antennas, described network equipment sends pattern according to the pilot tone of described each pilot tone and carries out pilot tone transmission; When there being the UE to described support double antenna and/or 4 antennas to send in the corresponding time of data, described network equipment carries out pilot tone transmission according to pilot tone sending strategy.
On the other hand, the embodiment of the present invention additionally provides a kind of equipment sent for pilot tone, comprising: acquiring unit, sends pattern for the pilot tone obtaining each pilot tone; Transmitting element, for not to supporting that the UE of double antenna and/or 4 antennas sends in the corresponding time of data, ought sending pattern according to the pilot tone of described each pilot tone and carrying out pilot tone transmission; When there being the UE to described support double antenna and/or 4 antennas to send in the corresponding time of data, carry out pilot tone transmission according to pilot tone sending strategy.
Pilot tone transmission is carried out by adopting pilot tone transmission pattern and pilot tone sending strategy, both can save the power that pilot tone takies, the UE of support 4 antenna can be avoided again supporting the interference of the UE of single double antenna and supporting that the UE of double antenna is to the interference of the UE of support single antenna.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the method for the pilot tone transmission that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the equipment for pilot tone transmission that the embodiment of the present invention provides;
Fig. 3 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 3 a is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 4 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 4 a is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 5 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 6 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 7 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 8 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Fig. 9 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Figure 10 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Figure 11 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Figure 12 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides;
Figure 13 is a scene schematic diagram of the pilot tone transmission that the embodiment of the present invention provides.
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 skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The methods, devices and systems that the embodiment of the present invention provides a kind of pilot tone to send.In an embodiment of the present invention, by the explanation carrying out the method for pilot tone transmission for 4 antenna MIMO, be described in detail respectively below.Certainly other wireless communication technology can also be applied to, as LTE (Long Term Evolution, Long Term Evolution), TD-SCDMA (Time Division-Synchronous Code Division MultipleAccess, TD SDMA) etc.
Embodiment one,
Angle from network equipment is described by the present embodiment, and this network equipment is specifically as follows the sending station of the other types such as base station (NodeB) or subscriber equipment.
The flow chart of the method that the pilot tone that Fig. 1 provides for the embodiment of the present invention sends, as shown in Figure 1, idiographic flow can be as follows:
101, network equipment obtains the pilot tone transmission pattern of each pilot tone respectively;
In embodiments of the present invention, network equipment carries out can sending pattern according to pilot tone when pilot tone sends and carries out, and each pilot tone sends pattern according to the pilot tone of correspondence and carries out pilot tone transmission.
The transmission rule that it can be pilot tone on time and/or space, frequency, code channel that pilot tone sends pattern, can express by figure, form or sequence etc.Pilot tone sends pattern and can be described by series of parameters, and such as pilot tone sends pattern cycle T
cycle, send the time span T of pilot tone in each cycle
burstwith the time migration T of pilot tone relative to certain reference time system's initial time
offset.T
cycle, T
burstand T
offsetparameter may be used for regulation pilot tone transmission rule in time.
Such as in HSDPA system, the reference time system of physical layer is generally SFN (System FrameNumber, System Frame Number), and using the initial time of frame during SFN=0 as starting point, then the moment t sending pilot tone meets:
(SFN*10ms+T
offset+t)mod T
cycle＜T
burst(1)
Based on above-mentioned formula (1), when t meets formula (1), send pilot tone; When t does not meet formula (1), do not send pilot tone.
To those skilled in the art, 1 frame=10ms=5 subframe=15slot=38400chip, with the formula (1) also have other distortion statement, such as:
If T
burstunit be frame, then formula (1) can be: (SFN*1 frame+T
offset+ t) mod T
cycle< T
burst;
If T
burstunit be subframe, then formula (1) can be: (SFN*5 subframe+T
offset+ t) modT
cycle< T
burst;
If T
burstunit be slot, then formula (1) can be: (SFN*15slot+T
offset+ t) modT
cycle< T
burst;
If T
bursttake 256chip as least unit, then formula (1) can be: (SFN*150*256chip+T
offset+ t) mod T
cycle< T
burst.
Certainly other T may also be had
burstunit and corresponding formulae express form.Above-mentioned frame, subframe, slot, chip Deng Doushi chronomere, can omit in Practical Calculation.
Therefore, using the initial time of frame during SFN=0 as starting point, then the moment t sending pilot tone meets formula and can be summarized as: (SFN*N+T
offset+ t) mod T
cycle< T
burst, the wherein value of N and T
burstunit relevant.
Based on above-mentioned pilot tone delivery time, the send mode of pilot tone can be send continuously, also can be the mode of discontinuous transmission, wherein discontinuous transmission, be called gating mode in embodiments of the present invention.In the present embodiment for 4 antenna MIMO scene, being discontinuous transmission needing to have at least the pilot tone of a pilot tone to send pattern in the pilot tone sent, namely having at least a pilot tone to adopt gating mode.
Under the present embodiment 4 antenna MIMO scene, if the quantity of pilot tone is 4,4 pilot tones can with 4 antenna one_to_one corresponding, each pilot tone sends by network equipment respectively on correspondence antenna.If the quantity of pilot tone is less than 4, pilot tone and antenna can not be one to one, the pilot tone with discontinuous transmission is sent to the pilot tone of pattern, the pilot tone that this is had the pilot tone transmission pattern of discontinuous transmission by network equipment sends on multiple antennas of correspondence.
In addition, each pilot tone has independently power, and namely all pilot tones can have identical power, also can have different power.The general power that can set the first pilot tone, then arranges the second pilot tone respectively, the power bias value of the 3rd pilot tone and relative first pilot tone of the 4th pilot tone or amplitude ratio.Independently can certainly arrange, not limit at this.
102, when not sending in the corresponding time of data to the UE of support double antenna and/or 4 antennas, network equipment sends pattern according to pilot tone and carries out pilot tone transmission; When sending in the corresponding time of data the UE of support double antenna and/or 4 antennas, network equipment carries out pilot tone transmission according to pilot tone sending strategy;
In the present embodiment, support varying number antenna can be there is simultaneously and send the UE of data, the UE of such as supports single antenna, the UE of support double antenna and the support UE of 4 antennas.
Preferably, in the present embodiment, pilot tone sending strategy can be specifically:
Within the corresponding time of the UE transmission data to support double antenna and/or 4 antennas, the pilot tone that UE supports sends by network equipment; Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
Certainly, in the present embodiment, other pilot tone sending strategy is also also had, such as:
The UE of support double antenna and/or 4 antennas is being sent to the time T before the corresponding time of data
preamblein, network equipment sends the pilot tone that UE supports;
Time T after the corresponding time of the UE transmission data to support double antenna and/or 4 antennas
postamblein, network equipment sends the pilot tone that UE supports;
Wherein, T
preambleand T
postamblearrange respectively as required, can be the same or different, do not limit at this.
In the pilot sending method of the present embodiment, pilot tone transmission pattern and predetermined pilot tone sending strategy is adopted to carry out pilot tone transmission, both can save the power that pilot tone takies, the UE of support 4 antenna can be avoided again supporting the interference of the UE of single double antenna and supporting that the UE of double antenna is to the interference of the UE of support single antenna.
Embodiment two,
As shown in Figure 2, the present embodiment discloses a kind of equipment sent for pilot tone, and this equipment is network equipment, can be the sending station of the other types such as base station (NodeB) or subscriber equipment.
The equipment sent for pilot tone of the present embodiment, comprising:
Acquiring unit 201, sends pattern for the pilot tone obtaining each pilot tone;
Pilot tone transmitting element 202, for ought not send in the corresponding time of data to the UE of support double antenna and/or 4 antennas, network equipment sends pattern according to pilot tone and carries out pilot tone transmission; When sending in the corresponding time of data the UE of support double antenna and/or 4 antennas, network equipment carries out pilot tone transmission according to predetermined pilot tone sending strategy;
Wherein preferred, predetermined pilot tone sending strategy can be specifically: within the corresponding time of the UE transmission data to support double antenna and/or 4 antennas, and network equipment sends pilot tone.Optionally, predetermined pilot tone sending strategy also can be: the UE of support double antenna and/or 4 antennas is being sent to the time T before the corresponding time of data
preamblein, network equipment sends the pilot tone that UE supports; Time T after the corresponding time of the UE transmission data to support double antenna and/or 4 antennas
postamblein, network equipment sends the pilot tone that UE supports; Wherein, T
preambleand T
postamblearrange respectively as required, can be the same or different, do not limit at this.Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
In embodiment two, the parameter of pilot tone transmission pattern comprises pilot tone transmission pattern cycle T
cycle, send the time span T of pilot tone in each cycle
burstwith the time migration T of pilot tone relative to certain reference time system's initial time
offset; If using the initial time of frame during system frame number SFN=0 as starting point, send in described pilot tone the moment t that in pattern, pilot tone sends and meet: (SFN*10ms+T
offset+ t) mod T
cycle< T
burst.Certainly other T may also be had
burstunit and corresponding formulae express form, as described in embodiment one, be not repeated herein.
In the present embodiment still for 4 antenna MIMO scene, being discontinuous transmission needing to have at least the pilot tone of a pilot tone to send pattern in the pilot tone sent, namely having at least a pilot tone to adopt gating mode.Then transmitting element also for: described each pilot tone is sent respectively on correspondence antenna; Or the pilot tone that the described pilot tone with discontinuous transmission sends pattern is sent on multiple antennas of correspondence.
The equipment for pilot tone transmission of the present embodiment adopts pilot tone to send pattern and predetermined pilot tone sending strategy carries out pilot tone transmission, both can having saved the power that pilot tone takies, the UE of support 4 antenna can being avoided again supporting that single double antenna sends the interference of the UE of data and supports that double antenna sends the UE of data to supporting that single antenna sends the interference of the UE of data.
Embodiment three,
The equipment that method described by embodiment one and embodiment two describe, can as the embody rule scene of Fig. 3, network equipment needs transmission 4 pilot tones, in the present embodiment, the first pilot tone Pilot1, the second pilot tone Pilot2, the 3rd pilot tone Pilot3 and the 4th pilot tone Pilot4 send respectively on correspondence antenna.
As shown in Figure 3, UE1 supports that single antenna sends the UE of data, and UE2 is the UE that support double antenna sends data, UE3 is support the UE with 4 antennas.Preferably, UE1 uses Pilot1, UE2 to use Pilot1 and Pilot2, UE3 to use Pilot1, Pilot2, Pilot3 and Pilot4.
For in the embodiment of Fig. 3, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone and the second pilot tone is T
offset=0, T
cycle=T
burst, namely the first pilot tone and the second pilot tone adopt the mode sent continuously;
The parameter of the 3rd pilot tone and the 4th pilot tone is T
offset, 3=0, T
cycle, 3=6slot, T
burst, 3=1slot; T
offset, 4=0, T
cycle, 4=6slot, T
burst, 4=1slot, namely the 3rd pilot tone and the 4th pilot tone adopt the mode of gating transmission.
For in the embodiment of Fig. 2, the power of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, specifically can be as follows:
All pilot powers are set to identical.Or be that for the 3rd pilot tone and the 4th pilot tone, its power setting can than the second pilot tone also low 3dB than the low 3dB of the first pilot power by the power setting of the second pilot tone.Certainly can also there is other power setting mode, not limit at this.
When only having supporting that UE1 and UE2 sends in the corresponding time of data, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; Send in the corresponding time of data UE3 when having, can carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
To supporting that UE3 sent in the corresponding time of data, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 3 corresponding;
Support UE3 is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone continuously, the pilot tone that dot matrix is as shown in Figure 3 filled;
Time T after the corresponding time supporting UE3 transmission data
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone continuously, the pilot tone that grid line is as shown in Figure 3 filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 3 a, in fig. 3 a, UE1, UE2 and UE3 is with reference to the embodiment of figure 3 correspondence, and the power setting of each pilot tone also with reference to the embodiment of figure 3 correspondence, can be not repeated herein.
In the embodiment that Fig. 3 a is corresponding, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone and the second pilot tone is T
offset=0, T
cycle=T
burst=1slot, namely the first pilot tone and the second pilot tone adopt the mode sent continuously;
The parameter of the 3rd pilot tone and the 4th pilot tone is T
offset, 3=0, T
cycle, 3=12slot, T
burst, 3=3slot; T
offset, 4=0, T
cycle, 4=12slot, T
burst, 4=3slot, namely the 3rd pilot tone and the 4th pilot tone adopt the mode of gating transmission.
When only having supporting that UE1 and UE2 sends in the corresponding time of data, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; Send in the corresponding time of data UE3 when having, can carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
To supporting that UE3 sent in the corresponding time of data, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 3 a corresponding;
Support UE3 is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone continuously, the pilot tone that dot matrix is as shown in Figure 3 a filled
Time T after the corresponding time supporting UE3 transmission data
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone continuously, the pilot tone that grid line is as shown in Figure 3 a filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 4, in the diagram, UE1, UE2 and UE3 is with reference to the embodiment of figure 3 correspondence, and the power setting of each pilot tone also with reference to the embodiment of figure 3 correspondence, can be not repeated herein.
In the embodiment that Fig. 4 is corresponding, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone is T
offset=0, T
cycle=T
burst, namely the first pilot tone adopts the mode sent continuously;
The parameter of the second pilot tone, the 3rd pilot tone and the 4th pilot tone is T
offset, 3=0, T
cycle, 3=6slot, T
burst, 3=1slot; T
offset, 4=0, T
cycle, 4=6slot, T
burst, 4=1slot, namely the second pilot tone, the 3rd pilot tone and the 4th pilot tone adopt the mode that gating sends.
In the embodiment that Fig. 4 is corresponding, to supporting that UE1 sends in the corresponding time of data, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; Send in the corresponding time of data UE2 and UE3 when having, can carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
To supporting that UE2 and UE3 sent in the corresponding time of data, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 4 corresponding;
Support UE2 is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone; Support UE3 is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that dot matrix is as shown in Figure 4 filled;
Time T after the corresponding time to support UE2 transmission data
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone; Time T after the corresponding time to support UE3 transmission data
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that grid line is as shown in Figure 4 filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 4 a, in fig .4, UE1, UE2 and UE3 is with reference to the embodiment of figure 3 correspondence, and the power setting of each pilot tone also with reference to the embodiment of figure 3 correspondence, can be not repeated herein.
In the embodiment that Fig. 4 a is corresponding, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone is T
offset=0, T
cycle=T
burst=1slot, namely the first pilot tone adopts the mode sent continuously;
The parameter of the second pilot tone, the 3rd pilot tone and the 4th pilot tone is T
offset, 3=0, T
cycle, 3=12slot, T
burst, 3=3slot; T
offset, 4=0, T
cycle, 4=12slot, T
burst, 4=3slot, namely the second pilot tone, the 3rd pilot tone and the 4th pilot tone adopt the mode that gating sends.
In the embodiment that Fig. 4 a is corresponding, to supporting that UE1 sends in the corresponding time of data, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; Send in the corresponding time of data UE2 and UE3 when having, can carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
To supporting that UE2 sent in the corresponding time of data, send the first pilot tone, the second pilot tone; To supporting that UE3 sent in the corresponding time of data, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in fig. 4 a corresponding;
Support UE2 is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone; Support UE3 is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that dot matrix is as shown in fig. 4 a filled;
Time T after the corresponding time to support UE2 transmission data
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone; Time T after the corresponding time to support UE3 transmission data
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that grid line is as shown in fig. 4 a filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 5.
In the embodiment that Fig. 5 is corresponding, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone and the second pilot tone is T
offset=0, T
cycle=T
burst, namely the first pilot tone and the second pilot tone adopt the mode sent continuously;
The embodiment corresponding with Fig. 3 and Fig. 4 unlike, in the embodiment that Fig. 4 is corresponding, T
burstunit take 256chip as least unit, setting the 3rd pilot tone and the parameter of the 4th pilot tone are T
offset, 3=0, T
cycle, 3=2*256chip, T
burst, 3=256chip; T
offset, 4=256chip, T
cycle, 4=2*256chip, T
burst, 4=256chip, namely the 3rd pilot tone and the 4th pilot tone adopt the mode of gating transmission.Based on aforesaid optimum configurations, in the embodiment that Fig. 5 is corresponding, do not having in data transmission situation, the 3rd pilot tone and the 4th pilot tone send not overlapping in time.
In the embodiment that Fig. 5 is corresponding, data are the transmission data of support 4 antenna.When not sending in the corresponding time of data to the UE of support 4 antenna, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; Send in the corresponding time of data when having to the UE of support 4 antenna, first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
Sending in the corresponding time of data the UE of support 4 antenna, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 5 corresponding;
The UE of support 4 antenna is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=2*256chip) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that dot matrix is as shown in Figure 5 filled;
The time T after the corresponding time of data is sent at the UE of support 4 antenna
postamble(setting T
postamble=256chip) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that grid line is as shown in Figure 5 filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 6.
For in the embodiment that Fig. 6 answers, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone and the second pilot tone is T
offset=0, T
cycle=T
burst, namely the first pilot tone and the second pilot tone adopt the mode sent continuously;
The parameter of the 3rd pilot tone and the 4th pilot tone is T
offset, 3=0, T
cycle, 3=20*256chip=2slot, T
burst, 3=1slot; T
offset, 4=1slot, T
cycle, 4=2slot, T
burst, 4=1slot, namely the 3rd pilot tone and the 4th pilot tone adopt the mode of gating transmission.Based on aforesaid optimum configurations, in the embodiment that Fig. 6 is corresponding, do not having in data transmission situation, the 3rd pilot tone and the 4th pilot tone send not overlapping in time.
When in the corresponding time of UE transmission data support 4 antenna UE not being sent to data, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; Send in the corresponding time of data when having to the UE of support 4 antenna, first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
Sending in the corresponding time of data the UE of support 4 antenna, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 6 corresponding;
The time T before the corresponding time of data is sent at UE support 4 antenna UE being sent to data
preamblein, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th lead, the pilot tone that dot matrix is as shown in Figure 6 filled;
Time T after support 4 antenna UE sends the corresponding time of the UE transmission data of data
postamblein, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th lead, the pilot tone that grid line is as shown in Figure 6 filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 7.
In the embodiment that Fig. 7 is corresponding, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone and the second pilot tone is T
offset=0, T
cycle=T
burst, namely the first pilot tone and the second pilot tone adopt the mode sent continuously;
With previous embodiment unlike, in the embodiment that Fig. 7 is corresponding, T
burstunit be subframe, the parameter of the 3rd pilot tone and the 4th pilot tone is T
offset, 3=0, T
cycle, 3=6slot=2TTI, T
burst, 3=3slot=1TTI; T
offset, 4=1TTI, T
cycle, 4=2TTI, T
burst, 4=1TTI, namely the 3rd pilot tone and the 4th pilot tone adopt the mode of gating transmission.Based on aforesaid optimum configurations, in the embodiment that Fig. 7 is corresponding, do not having in data transmission situation, the 3rd pilot tone and the 4th pilot tone send not overlapping in time.
When not sending in the corresponding time of data to the UE of support 4 antenna, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; Send in the corresponding time of data when having to the UE of support 4 antenna, first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
Sending in the corresponding time of data the UE of support 4 antenna, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 7 corresponding;
The UE of support 4 antenna is being sent to the time T before the corresponding time of data
preamblein, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that dot matrix is as shown in Figure 7 filled;
The time T after the corresponding time of data is sent at the UE of support 4 antenna
postamblein, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that grid line is as shown in Figure 7 filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 8.
In the embodiment that Fig. 8 is corresponding, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone and the second pilot tone is T
offset=0, T
cycle=T
burst, namely the first pilot tone adopts the mode sent continuously;
In the embodiment that Fig. 8 is corresponding, T
bursttake 256chip as least unit, the parameter of the second pilot tone, the 3rd pilot tone and the 4th pilot tone is T
offset, 2=0, T
cycle, 2=3*256chip, T
burst, 2=256chip, T
offset, 3=256chip, T
cycle, 3=3*256chip, T
burst, 3=256chip, T
offset, 4=2*256chip, T
cycle, 4=3*256chip, T
burst, 4=256chip, namely the second pilot tone, the 3rd pilot tone and the 4th pilot tone adopt the mode that gating sends.Based on aforesaid optimum configurations, in the embodiment that Fig. 8 is corresponding, do not having in data transmission situation, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send not overlapping in time.
When not sending in the corresponding time of data to the UE of support double antenna and/or 4 antennas, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; When having supporting that the UE of double antenna and/or 4 antennas sends in the corresponding time of data, first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
To supporting that the UE that double antenna sends data sent in the corresponding time of data, send the first pilot tone, the second pilot tone; Sending in the corresponding time of data the UE of support 4 antenna, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 8 corresponding;
The time T before the corresponding time of data is sent at UE support double antenna being sent to data
preamble(setting T
preamble=2*256chip) in, send the first pilot tone, the second pilot tone; The UE of support 4 antenna is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=2*256chip) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that dot matrix is as shown in Figure 8 filled;
Time T after the corresponding time of UE transmission data supporting double antenna transmission data
postamble(setting T
postamble=256chip) in, send the first pilot tone, the second pilot tone; The time T after the corresponding time of data is sent at the UE of support 4 antenna
postamble(setting T
postamble=256chip) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that grid line is as shown in Figure 8 filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, also can as the embody rule scene of Fig. 9.
In the embodiment that Fig. 9 is corresponding, the pilot tone of the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone sends pattern, specifically can be as follows:
The parameter of the first pilot tone and the second pilot tone is T
offset=0, T
cycle=T
burst, namely the first pilot tone adopts the mode sent continuously;
In the embodiment that Fig. 9 is corresponding, T
burstunit be slot, the parameter of the second pilot tone, the 3rd pilot tone and the 4th pilot tone is T
offset, 2=0, T
cycle, 2=3slot, T
burst, 2=1slot, T
offset, 3=1slot, T
cycle, 3=3slot, T
burst, 3=1slot, T
offset, 4=2slot, T
cycle, 4=3slot, T
burst, 4=1slot, namely the second pilot tone, the 3rd pilot tone and the 4th pilot tone adopt the mode that gating sends.Based on aforesaid optimum configurations, in the embodiment that Fig. 9 is corresponding, do not having in data transmission situation, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send not overlapping in time.
When not sending in the corresponding time of data to the UE of support double antenna and/or 4 antennas, the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; When having supporting that the UE of double antenna and/or 4 antennas sends in the corresponding time of data, first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
To supporting that the UE that double antenna sends data sent in the corresponding time of data, send the first pilot tone, the second pilot tone; Sending in the corresponding time of data the UE of support 4 antenna, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that left oblique line is as shown in Figure 9 corresponding;
The time T before the corresponding time of data is sent at UE support double antenna being sent to data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone; The UE of support 4 antenna is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that dot matrix is as shown in Figure 9 filled;
Time T after the corresponding time of UE transmission data supporting double antenna transmission data
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone; The time T after the corresponding time of data is sent at the UE of support 4 antenna
postamble(setting T
postamble=1slot) in, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, the pilot tone that grid line is as shown in Figure 9 filled.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
The equipment that method described by embodiment one and embodiment two describe, can as the embody rule scene of Figure 10-12.In embodiment as corresponding in Fig. 3 to Fig. 9, each pilot tone sends pattern according to its pilot tone and sends on an antenna of correspondence, i.e. pilot tone and antenna one_to_one corresponding.With embodiment corresponding to Fig. 3 to Fig. 9 unlike, in the embodiment of such as Figure 10-12 correspondence, have the pilot tone that gating mode pilot tone sends pattern, can send pattern according to its pilot tone and send on the different antenna of correspondence, namely a pilot tone can send on different antennas.
Based on the feature that a pilot tone can send on different antennas, in the embodiment of such as Figure 10-12 correspondence, the parameter that pilot tone sends pattern also changes to some extent, specifically can comprise pilot tone and send pattern cycle T
cycle, pilot tone sends pattern minimum time unit T
unit, in each cycle, send the time span T of pilot tone
burst, the antenna number N that pilot tone uses
ant, pilot tone order of transmission S and pilot tone are relative to the time migration T of certain reference time system's initial time
offset, wherein S is a 1 × N
antvector, such as S=(1,3,2), represents this pilot tone successively from used antenna 1, antenna 3, and on antenna 2 send, go round and begin again, until T
bursttime ends, and the duration sent on each antenna is T
unit.
In the embodiment of Figure 10-12 correspondence, being the first pilot tone with pure real pilot tone of filling, is the second pilot tone with the pilot tone that horizontal line is filled, specifically can be as follows:
As shown in Figure 10, the first pilot tone sends on antenna 1, and its corresponding parameter is T
offset=0, T
cycle=T
burst, namely the first pilot tone adopts the mode sent continuously on antenna 1;
Second pilot tone sends on antenna 2, antenna 3 and antenna 4, and its corresponding parameter is T
offset, 2=0, T
cycle, 2=6slot, T
burst, 2=1slot, T
unit, 2=256chip, S2=(2,3,4), wherein preferred second pilot tone can use identical power on antenna 2, antenna 3 and antenna 4.
For the UE only supporting single antenna, because the first pilot tone continues to send, it normally can carry out channel estimating, channel measurement etc.For supporting that double antenna sends the UE of data, send owing to adopting gating mode, so very little to the interference of the first pilot tone, in addition because the second pilot tone sends on antenna 2, antenna 3 and antenna 4, antenna 2, antenna 3 and antenna 4 is same antenna to support the UE of double antenna to think, its data also can send in the first-class amplitude of antenna 2, antenna 3 and antenna 4.For the UE of support 4 antenna, the information of pilot tone pattern parameter can be got in advance, therefore can obtain complete channel information.
Within the corresponding time of the UE transmission data to support double antenna and/or 4 antennas, the second pilot tone also can with sending, and pilot tone sends pattern and when not sending data, the second pilot tone pattern will match.In the present embodiment, the pilot tone referring to its adjoint transmission that matches will and be supposed to increase T
bursttime pilot tone pattern within this period overlapping, namely its pilot tone send pattern will from hypothesis T
burstafter pilot tone pattern in intercept.If suppose T in Figure 10
burst, 2=T
cycle, 2time, the pilot tone of the second pilot tone sends pattern as shown in figure 11, and the pattern is in fact supposition, and relevant with the data that UE sends, Figure 11 only makes example and understands scheme more easily.
As shown in figure 12, for the UE supporting double antenna and/or 4 antennas, when not sending in the corresponding time of data to the UE of support double antenna and/or 4 antennas, the first pilot tone and the second pilot tone send pattern according to respective pilot tone and carry out pilot tone transmission; When having supporting that the UE of double antenna and/or 4 antennas sends in the corresponding time of data, first pilot tone and the second pilot tone carry out pilot tone transmission according to predetermined pilot tone sending strategy, wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
Within the corresponding time of the UE transmission data to support double antenna and/or 4 antennas, send the first pilot tone and the second pilot tone, the second pilot tone sends on multiple antennas of correspondence; Within this time period, the pilot tone of the second pilot tone sends pattern and when not sending data, the pilot tone transmission pattern of the second pilot tone matches, the pilot tone that horizontal line is as shown in figure 12 corresponding.
The UE of support double antenna and/or 4 antennas is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=3*256chip) in send the first pilot tone and the second pilot tone, the second pilot tone sends on multiple antennas of correspondence; Within this time period, the pilot tone of the second pilot tone sends pattern and when not sending data, the pilot tone transmission pattern of the second pilot tone matches, the pilot tone that dot matrix is as shown in figure 12 filled.
Time T after the corresponding time of the UE transmission data to support double antenna and/or 4 antennas
postamble(setting T
postamble=3*256chip) in send the first pilot tone and the second pilot tone, the second pilot tone sends on multiple antennas of correspondence; Within this time period, the pilot tone of the second pilot tone sends pattern and when not sending data, the pilot tone transmission pattern of the second pilot tone matches, the pilot tone that grid line is as shown in figure 12 filled.
In the embodiment of Figure 10-12 correspondence, based on the feature that a pilot tone can send on different antennas, can realize sending the pilot tone of the UE of support 4 antenna by sending two pilot tones, namely under the scene of 4 antenna MIMO, owing to not needing to introduce extra pilot tone when channel measurement, can only use two pilot tones to carry out channel measurement and data demodulates, be conducive to saving descending code resource.
For the UE of 4 antennas, except the first above-mentioned pilot tone and the second pilot approach can be adopted to carry out except pilot tone transmission, can also in the second pilot tone with when sending, extra transmission the 3rd pilot tone and/or the 4th pilot tone.When not sending in the corresponding time of data to the UE of support 4 antenna, each pilot tone sends pattern according to respective pilot tone and carries out pilot tone transmission; When there being the UE to support 4 antenna to send in the corresponding time of data, each pilot tone carries out pilot tone transmission according to predetermined pilot tone sending strategy, and wherein predetermined pilot tone sending strategy specifically can adopt any one mode following to realize, as follows:
As shown in figure 13, suppose outside transmission first pilot tone and the second pilot tone, also send the 3rd pilot tone and the 4th pilot tone, namely within the corresponding time of the UE transmission data to support 4 antenna, send the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, wherein the second pilot tone, the 3rd pilot tone and the 4th pilot tone send on multiple antennas of correspondence; Within this time period, the pilot tone of the second pilot tone sends pattern and when not sending data, the pilot tone transmission pattern of the second pilot tone matches, it is similar that the transmission pattern of the 3rd pilot tone and the 4th pilot tone and the second pilot tone send pattern, only can have difference on sending order, such as S3=(3,4,2), S4=(4,2,3) pilot tone that, horizontal line is corresponding as shown in fig. 13 that; In addition the transmitted power of the 3rd pilot tone and the 4th pilot tone can be equal with the power of the second pilot tone.
The UE of support 4 antenna is being sent to the time T before the corresponding time of data
preamble(setting T
preamble=3*256chip) interior transmission the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, wherein the second pilot tone, the 3rd pilot tone and the 4th pilot tone send on multiple antennas of correspondence; Within this time period, the pilot tone of the second pilot tone sends pattern and when not sending data, the pilot tone transmission pattern of the second pilot tone matches, it is similar that the transmission pattern of the 3rd pilot tone and the 4th pilot tone and the second pilot tone send pattern, only can there is difference on sending order, the pilot tone of dot matrix filling as shown in fig. 13 that.
The time T after the corresponding time of data is sent at the UE of support 4 antenna
postamble(setting T
postamble=3*256chip) interior transmission the first pilot tone, the second pilot tone, the 3rd pilot tone and the 4th pilot tone, wherein the second pilot tone, the 3rd pilot tone and the 4th pilot tone send on multiple antennas of correspondence; Within this time period, the pilot tone of the second pilot tone sends pattern and when not sending data, the pilot tone transmission pattern of the second pilot tone matches, it is similar that the transmission pattern of the 3rd pilot tone and the 4th pilot tone and the second pilot tone send pattern, only can there is difference on sending order, the pilot tone of grid line filling as shown in fig. 13 that.
The equipment that method described by embodiment one and embodiment two describe, when carrying out pilot tone to the UE of support 4 antenna and sending, other application scenarios can also be had, three pilot tones are such as adopted, wherein the first pilot tone and the second pilot tone adopt the mode sent continuously on antenna 1 and antenna 2, to carry out pilot tone transmission respectively, it is gating mode that the pilot tone of the 3rd pilot tone sends pattern, and the 3rd pilot tone sends on antenna 3 and antenna 4.Under this scene, the method that pilot tone sends see the embodiment of Figure 10-13 correspondence, can be not repeated herein.
Interchangeable, the antenna sending gating pilot tone also can use other pilot tones used described in being different from outside pilot tone.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
Be described in detail the embodiment of the present invention above, apply specific case herein and set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for those skilled in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a method for pilot tone transmission, is characterized in that, comprising:
The pilot tone that network equipment obtains each pilot tone sends pattern;
When not sending in the corresponding time of data to the UE of support double antenna and/or 4 antennas, described network equipment sends pattern according to the pilot tone of described each pilot tone and carries out pilot tone transmission;
When there being the UE to described support double antenna and/or 4 antennas to send in the corresponding time of data, described network equipment carries out pilot tone transmission according to pilot tone sending strategy;
Wherein, described pilot tone sending strategy comprises:
Within the corresponding time of the UE transmission data to the described double antenna of support and/or 4 antennas, the pilot tone that described UE supports sends by described network equipment;
The UE of the described double antenna of support and/or 4 antennas is being sent to the time T before the corresponding time of data
preamblein, the pilot tone that described UE supports sends by described network equipment;
Time T after the corresponding time of the UE transmission data to the described double antenna of support and/or 4 antennas
postamblein, the pilot tone that described UE supports sends by described network equipment.
2. method according to claim 1, is characterized in that, the parameter that described pilot tone sends pattern comprises pilot tone transmission pattern cycle T
cycle, send the time span T of pilot tone in each cycle
burstwith the time migration T of pilot tone relative to certain reference time system's initial time
offset;
If using the initial time of frame during system frame number SFN=0 as starting point, send in described pilot tone the moment t that in pattern, pilot tone sends and meet:
(SFN*10ms+T
offset+t)mod T
cycle<T
burst。
3. method according to claim 1, is characterized in that, the parameter that described pilot tone sends pattern comprises pilot tone transmission pattern cycle T
cycle, send the time span T of pilot tone in each cycle
burst, pilot tone is relative to the time migration T of certain reference time system's initial time
offset, pilot tone sends pattern minimum time unit T
unitwith pilot tone order of transmission S, wherein S is a N
antthe vector of × 1, N
antfor the antenna number N that pilot tone uses
ant.
4. method according to claim 1 and 2, is characterized in that, described each pilot tone respectively with one antenna correspondence;
Described method also comprises: described each pilot tone sends by described network equipment respectively on correspondence antenna.
5. the method according to claim 1 or 3, is characterized in that, having at least the pilot tone of a pilot tone to send pattern in described pilot tone is discontinuous transmission, and the pilot tone that each pilot tone with discontinuous transmission sends pattern is corresponding with multiple antenna respectively;
Described method also comprises: the pilot tone that described each pilot tone with discontinuous transmission sends pattern sends by described network equipment on multiple antennas of correspondence.
6., for the equipment that pilot tone sends, it is characterized in that, comprising:
Acquiring unit, sends pattern for the pilot tone obtaining each pilot tone;
Transmitting element, for not to supporting that the UE of double antenna and/or 4 antennas sends in the corresponding time of data, ought sending pattern according to the pilot tone of described each pilot tone and carrying out pilot tone transmission; When there being the UE to described support double antenna and/or 4 antennas to send in the corresponding time of data, carry out pilot tone transmission according to pilot tone sending strategy;
Wherein, described transmitting element is used for carrying out pilot tone transmission according to pilot tone sending strategy, comprising:
Described transmitting element is used for the pilot tone that described UE supports being sent within the corresponding time UE of the described double antenna of support and/or 4 antennas being sent to data;
Described transmitting element is used for the UE of the described double antenna of support and/or 4 antennas being sent to the time T before the corresponding time of data
preambleinterior the pilot tone that described UE supports to be sent;
Described transmitting element is used for the time T after the corresponding time of the UE transmission data to the described double antenna of support and/or 4 antennas
postambleinterior the pilot tone that described UE supports to be sent.
7. equipment according to claim 6, is characterized in that, the parameter that described pilot tone sends pattern comprises pilot tone transmission pattern cycle T
cycle, send the time span T of pilot tone in each cycle
burstwith the time migration T of pilot tone relative to certain reference time system's initial time
offset;
If using the initial time of frame during system frame number SFN=0 as starting point, send in described pilot tone the moment t that in pattern, pilot tone sends and meet:
(SFN*10ms+T
offset+t)mod T
cycle<T
burst。
8. equipment according to claim 6, is characterized in that, the parameter that described pilot tone sends pattern comprises pilot tone transmission pattern cycle T
cycle, send the time span T of pilot tone in each cycle
burst, pilot tone is relative to the time migration T of certain reference time system's initial time
offset, pilot tone sends pattern minimum time unit T
unitwith pilot tone order of transmission S, wherein S is a N
antthe vector of × 1, N
antfor the antenna number N that pilot tone uses
ant.
9. equipment according to claim 6, is characterized in that, described transmitting element also for: described each pilot tone is sent respectively on correspondence antenna.
10. equipment according to claim 6, is characterized in that, having at least the pilot tone of a pilot tone to send pattern in described pilot tone is discontinuous transmission, and the pilot tone that each pilot tone with discontinuous transmission sends pattern is corresponding with multiple antenna respectively;
Described transmitting element also for: the pilot tone that described each pilot tone with discontinuous transmission sends pattern is sent on multiple antennas of correspondence.
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| CN201110439780.6A CN103178889B (en) | 2011-12-24 | 2011-12-24 | The method and apparatus that pilot tone sends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110439780.6A CN103178889B (en) | 2011-12-24 | 2011-12-24 | The method and apparatus that pilot tone sends |
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| CN103178889B true CN103178889B (en) | 2015-09-30 |
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| CN101174866A (en) * | 2006-10-30 | 2008-05-07 | 中兴通讯股份有限公司 | Pilot signal transmission method for multiple transmitting antenna system based on orthogonal frequency division multiplexing |
| CN101184074A (en) * | 2006-11-14 | 2008-05-21 | 中兴通讯股份有限公司 | Orthogonal frequency division multiplexing based pilot signal transmitting method of multi-transmission antenna system |
| CN101394262A (en) * | 2007-09-18 | 2009-03-25 | 上海华为技术有限公司 | Pilot transmission method and device in OFDM system |
| JP2009188535A (en) * | 2008-02-04 | 2009-08-20 | Mitsubishi Electric Corp | Transmitter and receiver |
| CN101682432A (en) * | 2007-05-29 | 2010-03-24 | 三菱电机株式会社 | Calibration method, communication system, frequency control method, and communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2858264B1 (en) * | 2005-09-30 | 2019-12-18 | Apple Inc. | MIMO communication system |
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|---|---|---|---|---|
| CN1914870A (en) * | 2003-12-05 | 2007-02-14 | 高通股份有限公司 | Multi-antenna system to simultaneous support of MISO and MIMO receivers |
| CN101174866A (en) * | 2006-10-30 | 2008-05-07 | 中兴通讯股份有限公司 | Pilot signal transmission method for multiple transmitting antenna system based on orthogonal frequency division multiplexing |
| CN101184074A (en) * | 2006-11-14 | 2008-05-21 | 中兴通讯股份有限公司 | Orthogonal frequency division multiplexing based pilot signal transmitting method of multi-transmission antenna system |
| CN101682432A (en) * | 2007-05-29 | 2010-03-24 | 三菱电机株式会社 | Calibration method, communication system, frequency control method, and communication device |
| CN101394262A (en) * | 2007-09-18 | 2009-03-25 | 上海华为技术有限公司 | Pilot transmission method and device in OFDM system |
| JP2009188535A (en) * | 2008-02-04 | 2009-08-20 | Mitsubishi Electric Corp | Transmitter and receiver |
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