CN101674122A - Method and device for acquiring uplink complete channel matrix in TDD system - Google Patents
Method and device for acquiring uplink complete channel matrix in TDD system Download PDFInfo
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- CN101674122A CN101674122A CN200810119936A CN200810119936A CN101674122A CN 101674122 A CN101674122 A CN 101674122A CN 200810119936 A CN200810119936 A CN 200810119936A CN 200810119936 A CN200810119936 A CN 200810119936A CN 101674122 A CN101674122 A CN 101674122A
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Abstract
The invention discloses a method for acquiring an uplink complete channel matrix in a TDD system, which comprises the following steps that: user equipment respectively uses a plurality of antennae totransmit uplink sounding signals at different time periods; a base station estimates channels according to the sounding signals; and the base station acquires the uplink complete channel matrix H of the user equipment. The invention also discloses the user equipment and the base station. By using the method of respectively transmitting the uplink sounding signals at different time periods throughthe plurality of antennae of the user equipment, the base station acquires the uplink complete channel matrix, so the TDD system can support the realization of technology such as complete channel matrix-based pre-coding and antenna switching on the premise that the user equipment cannot emit signals through the plurality of antennae simultaneously, and the multi-antenna performance of the TDD system is guaranteed.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method and apparatus that in the TDD system, obtains uplink complete channel matrix.
Background technology
At HSPA+ (High Speed Packet Access, high-speed packet inserts) and LTE (Long Term Evolution, Long Term Evolution) etc. introduced MIMO (Multiple Input Multiple Output in the future communications system, multiple-input and multiple-output), HOM (Higher OrderModulation, high order modulation more) technology such as further improves the message transmission rate and the capacity of system.In order to make the system that is operated under the MIMO pattern can utilize TDD (TimeDivision Duplexing, time division duplex) distinctive up-downgoing channel is used characteristic mutually, realize (Singular Value Decomposition based on SVD, singular value decomposition) no codebook precoding, antenna mode switch, AMC (Adaptive Modulation and Coding, adaptive modulation and coding) operation such as often need be carried out uplink channel estimation at Node B (base station) end and obtain complete channel matrix.
But, the hardware of considering UE (User Equipment, subscriber equipment) realizes and problem such as cost loss that the many antennas that limited UE in the TDD system usually can only be used for receiving simultaneously to obtain receive diversity, but can not launch simultaneously, promptly UE can only send data by single antenna.This is for the TDD system that has adopted the MIMO technology, at each TTI (Transmission Time Interval, Transmission Time Interval) interior Node B can only obtain channel fading coefficient between UE single antenna and all reception antennas of Node B by uplink channel estimation, and can't obtain the channel matrix of uplink complete.
If Node B end has N_nb root antenna, UE is because 2 antennas are adopted in the restriction of its volume etc. usually, and the dimension of MIMO spatial channel matrix H is N_nb * 2 so, the channel fading coefficient of link between an antenna of each row corresponding UE and all Node B antennas.
Multiple technologies all need to obtain complete channel matrix, such as no codebook precoding based on SVD, this Technology Need carries out uplink channel estimation at Node B end, obtain the channel matrix H of complete N_nb * 2, carry out SVD then, obtain the certain characteristics vector after the decomposition, vectorial number is the order of channel matrix H.When Node B will be descending parallel transmission m data flow (m is not more than the order of H), from the vector that SVD decomposites, select the characteristic vector of corresponding m big characteristic value, wherein each vector is used for data flow of weighting emission.In like manner, antenna mode switches and technology such as AMC also often needs to utilize complete channel matrix H in conjunction with factors such as detection algorithms, obtains signal to noise ratio after the detection of each data flow under each antenna mode.
Method for the required uplink complete channel matrix of these technology of solution generally includes at present: UE antenna time domain is switched emission and is used the technology that other does not need complete channel matrix instead.For the former, set a switch at UE, alternately be communicated with a plurality of antennas of UE then, when being communicated with certain antenna at every turn, Node B uplink channel estimation obtains the local channel matrix of N_nb * 1, and Node B sends in turn at all antennas of UE can obtain complete H after going over.For the latter, need the technology of uplink complete channel matrix to change the technology that only depends on the local channel matrix into those, change Beamforming etc. into as no codebook precoding based on SVD, the Beamforming technology depends on the spatial information of channel, and the channel matrix that only needs to obtain UE single antenna correspondence gets final product.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: for using the technology that other does not need complete channel matrix instead, on performance, have certain loss, for example when Node B employing is launched a plurality of data flow based on the no codebook precoding of SVD, can obtain near optimum in theory performance, if but use Beamforming instead, technology such as antenna grouping realize the words of multithread MIMO emission, owing to do not make full use of the full detail of space channel, therefore data are launched in the optimum equivalent beam territory that can cause using whole Node B aerial arrays to be provided, and have reduced array gain, power gain etc.Switch method for transmitting for UE antenna time domain, need system to carry out detailed design and could support this scheme, but do not have corresponding scheme in the TDD system, therefore this time domain switching method for transmitting does not still obtain the feasibility in the reality yet.
Summary of the invention
The problem that the embodiment of the invention will solve provides a kind of method and apparatus that obtains uplink complete channel matrix in the TDD system, to overcome a kind of defective that can not obtain uplink complete channel matrix in the TDD system in the prior art.
For achieving the above object, the technical scheme of the embodiment of the invention provides a kind of method of obtaining uplink complete channel matrix in the TDD system, said method comprising the steps of: subscriber equipment uses a plurality of antennas to send up sounding (detection) signal in different time sections respectively; Channel estimating is done according to described sounding signal in the base station; The base station obtains the uplink complete channel matrix H of described subscriber equipment according to described channel estimating.
Wherein, use respectively before a plurality of antennas send the step of up sounding signal in different time sections, also comprise: the period T of determining to upgrade channel matrix H according to the channel scene at described subscriber equipment.
Wherein, use a plurality of antennas to send in the step of up sounding signal respectively at described subscriber equipment in different time sections, specifically comprise: when the timer timing of described subscriber equipment reaches period T, and in period T not when the base station sends up sounding signal, described subscriber equipment uses a plurality of days alignment base stations to send up sounding signal in a plurality of Burst (burst) respectively.
Wherein, use a plurality of antennas to send in the step of up sounding signal respectively at described subscriber equipment in different time sections, specifically comprise: when described subscriber equipment adopts DPCH, according to making an appointment or cycle of the transmission uplink special physical channel information of high-level signaling configuration, described subscriber equipment uses a plurality of antennas periodically to send up sounding signal in different time sections respectively.
Wherein, use a plurality of antennas to send in the step of up sounding signal respectively at described subscriber equipment in different time sections, specifically comprise: increase a plurality of Transmission Time Intervals between High-Speed Shared Control Channel and High-Speed Physical Downlink Shared Channel, described subscriber equipment uses a plurality of antennas to send up sounding signal respectively in described a plurality of Transmission Time Intervals.
Wherein, use respectively before a plurality of antennas send the step of up sounding signal in different time sections at described subscriber equipment, also comprise: need adopt the antenna technology (as the multiplexing emission of descending double fluid, antenna mode switching etc.) that depends on complete channel matrix when described base station, the timer timing of described base station reaches period T, and when not upgrading channel matrix H in period T, described base station utilizes downlink physical control channel information to notify described subscriber equipment to send up sounding.
Wherein, described base station utilizes downlink physical control channel information to notify described subscriber equipment to send the step of up sounding, specifically comprise: when described subscriber equipment was provided with timer, described base station used the downlink physical control channel information of normal format to notify described subscriber equipment to send up sounding.
Wherein, described base station utilizes downlink physical control channel information to notify described subscriber equipment to send the step of up sounding, specifically comprise: when described subscriber equipment was not provided with timer, described base station used the downlink physical control channel information of normal format or the downlink physical control channel information of special format to notify described subscriber equipment to send up sounding; When using the downlink physical control channel information of normal format, described subscriber equipment sends uplink physical channel information as sounding according to the schedule information on the downlink physical control channel of described normal format on corresponding physical resource, keep supplying capable channel estimating; When using the downlink physical control channel information of special format, described subscriber equipment learns it is to notify it to send up sounding according to the particularity of described downlink physical control channel information.
Wherein, the concrete form of described up sounding is: include only pilot tone or uplink physical channel information.
The technical scheme of the embodiment of the invention also provides a kind of subscriber equipment, and described subscriber equipment comprises: a plurality of antennas are used for communicating with the base station; Up sounding signal transmitting unit is used to use the described a plurality of days described base stations of alignment to send up sounding signal; The signal sending controling unit is used to control described up sounding signal transmitting unit and sends up sounding signal in different time sections.
Wherein, described signal sending controling unit comprises: timer; Cycle is determined subelement, is used for determining according to the channel scene period T of renewal channel matrix H; Control sub unit is used for determining the period T that subelement is determined according to the timing and the described cycle of described timer, controls described up sounding signal transmitting unit and sends up sounding signal.
Wherein, described signal sending controling unit comprises: the cycle storing sub-units is used to store and makes an appointment or cycle of the transmission uplink special physical channel information of high-level signaling configuration; Control sub unit is used for the cycle according to described cycle storing sub-units storage, controls described up sounding signal period property transmitting element and sends up sounding signal.
Wherein, described signal sending controling unit comprises: Transmission Time Interval is provided with subelement, is used for increasing between High-Speed Shared Control Channel and High-Speed Physical Downlink Shared Channel a plurality of Transmission Time Intervals; Control sub unit is used for according to described Transmission Time Interval a plurality of Transmission Time Intervals that subelement increases being set, and controls described up sounding signal transmitting unit and send up sounding signal in described a plurality of Transmission Time Intervals.
Wherein, described signal sending controling unit comprises: announcement information receives subelement, is used to receive the described subscriber equipment of notifying that the base station sends and sends the announcement information of up sounding; Control sub unit is used for according to described announcement information, controls described up sounding signal transmitting unit and sends up sounding signal.
The technical scheme of the embodiment of the invention also provides a kind of base station, and described base station comprises: channel estimating unit is used for doing channel estimating according to the sounding signal that subscriber equipment sends; The channel matrix acquiring unit is used for obtaining according to described channel estimating the uplink complete channel matrix H of described subscriber equipment.
Wherein, described base station also comprises: timer; The cycle determining unit is used for according to the definite period T of upgrading channel matrix H of channel scene; The announcement information transmitting element is used for determining the period T that subelement is determined according to the timing and the described cycle of described timer, sends to subscriber equipment and notifies described subscriber equipment to send the announcement information of up sounding.
Wherein, described announcement information transmitting element comprises: the information format control sub unit, be used for configuration according to subscriber equipment, and control the form of described announcement information; When described subscriber equipment was provided with timer, the form of described announcement information was the downlink physical control channel information of normal format; When described subscriber equipment was not provided with timer, the form of described announcement information was the downlink physical control channel information of special format or the downlink physical control channel information that contains the normal format of schedule information.
Compared with prior art, technical scheme of the present invention has following advantage:
The embodiment of the invention sends the method for up sounding signal respectively in different time sections by a plurality of antennas of subscriber equipment, obtain uplink complete channel matrix, make the TDD system under the up prerequisite of can not many antennas launching simultaneously of subscriber equipment, can support realization, guaranteed many antenna performances of TDD system based on technology such as the precoding of complete channel matrix and antenna switchings.
Description of drawings
Fig. 1 is a kind of flow chart that obtains the method for uplink complete channel matrix in the TDD system of the embodiment of the invention;
Fig. 2 is the another kind of the embodiment of the invention obtains the method for uplink complete channel matrix in the TDD system a flow chart;
Fig. 3 is the another kind of the embodiment of the invention obtains the method for uplink complete channel matrix in the TDD system a flow chart;
Fig. 4 is a kind of HS-SCCH of prior art and the timing diagram of HS-PDSCH;
Fig. 5 is a kind of HS-SCCH of the embodiment of the invention and the timing diagram of HS-PDSCH.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
The embodiment of the invention is an example with TDD HSPA+ system, proposes several methods at Node B end acquisition uplink complete channel matrix, and the flow process that realizes, to support to depend on the technology of complete channel matrix.
If Node B has N_nb root antenna, UE has 2 antennas, and UE uses 2 antenna time domains to switch alternately and sends.Node B establishes a memory, storage complete channel matrix H, and size is N_nb * 2, and Node B can remove to cover a certain row among the H according to new uplink channel estimation result, with the H of updated stored.UE needs the antenna that the real time record last time is used to send, so that switch to another root when send next time.Can all set a pointer variable at Node B and UE, point to current armed UE antenna label.
When 1 antenna transmission uplink physical channel of the every use of UE information, Node B just can do uplink channel estimation one time, and upgrades in the channel matrix H row channel fading coefficient corresponding to this UE antenna.
Below among each embodiment, all be provided in a side of descendingly when having the double-current data that depend on complete channel matrix to be sent, how obtain the method for uplink complete channel matrix.In addition, if other depends on the technology of complete channel matrix,, then Node B in following each scheme is upgraded sending downlink data after the channel matrix and be changed to Node B and upgrade and implement other antenna technology after the channel matrix and get final product as the antenna mode switching etc.
Step s101 is according to the definite period T of upgrading channel matrix H of channel scene.The implication of T is still not upgraded channel matrix H when having surpassed time T, and then systematic function can be because of the out-of-date bigger deterioration of H, and has surpassed the patient mis-behave thresholding of system.Definite method of period T can be selected a typical T value by emulation or field testing, promptly works as systematic function and worsens because of the not prompt enough of H, and when reaching certain deterioration thresholding that can not put up with, the time of establishing the last H of renewal of distance this moment is T.In other words, if be exactly update cycle of H in time T, think that then H can follow the tracks of real-time channel condition preferably, systematic function can be ignored by the influence of H.Obviously the update cycle T of different channel scene H is different.
Step s102, when the timer timing of described UE reaches period T, and in period T not when the base station sends up sounding signal, described UE uses alignment base station, 2 skies to send up sounding signal in 2 Burst respectively.After sending sounding with the timer zero clearing.This sounding can be certain uplink physical channel information, or only sends the Midamble sign indicating number and do not have data division.
Step s103, Node B does uplink channel estimation according to the sounding signal of UE, thereby upgrades channel matrix H.For make Node B can identify the sounding signal from UE, can be different UEs distribution DPCH separately, or be that different UEs is distributed and share physical channel, but prerequisite is each UE take time of this shared physical channel can not be identical, and UE and Node B know in advance that each UE is to sharing the situation that takies of physical channel.
In addition, when adopting DPCH, can cancel the timer of UE end, but according to the cycle of making an appointment or high-level signaling disposes a UE transmission uplink special physical channel information, this cycle should be no more than the maximum time that Node B upgrades H, and the NodeB uplink special physical channel that goes to receive UE in the corresponding time is done channel estimating then.
Embodiment 2, the embodiment of the invention a kind of in the TDD system, obtain uplink complete channel matrix method flow process as shown in Figure 2, comprise 2 antennas in the hypothesis subscriber equipment in the present embodiment, Node B and UE respectively contain a timer.With reference to Fig. 2, present embodiment may further comprise the steps:
Step s201 is according to the definite period T of upgrading channel matrix H of channel scene.
Step s202, when Node B need adopt the antenna technology (as the multiplexing emission of descending double fluid, antenna mode switching etc.) that depends on complete channel matrix, Node B checked timer, judges whether timer is overtime.If not, then change step s203, otherwise change step s204.Downlink data in the present embodiment is to use double-current MIMO emission.
Step s203, send HS-SCCH (High-Speed Shared ControlChannel to UE, High-Speed Shared Control Channel), scheduling UE, UE receives this HS-SCCH, and UE judges whether overtimely according to own timer, and timer does not have overtime T at this moment, so UE is subsequently according to the data on the preparation reception downlink traffic channel HS-PDSCH of the sequential relationship in the standard (High-Speed Physical Downlink Shared Channel, High-Speed Physical Downlink Shared Channel).
Step s204 sends a downlink physical control channel information to UE, such as HS-SCCH (being not limited to the HS-SCCH channel) information.
Step s205, UE receive this control channel information.The timer of UE basis oneself judges whether overtime, and timer reached time T and do not upgrade H in T this moment, and then UE uses 2 sky alignment Node B to send up sounding in 2 Burst respectively.The sounding here can be certain uplink physical channel information, or only sends the Midamble sign indicating number and do not have data division.The physical resource (time-slot code channel) that sends the sounding use can be that Node B is this UE scheduled resources in the control channel.
Step s206, Node B does uplink channel estimation according to the sounding of UE, upgrades H.Node B and UE are the timer zero clearing after the renewal H.
Step s207, Node B sends HS-SCCH to UE, scheduling UE, UE receives HS-PDSCH according to schedule information.
In addition, processing for abnormal conditions, if UE sends up sounding, but Node B does not detect, then UE timer zero clearing, Node B timer continue timing, arrive T once more after UE send up sounding once more, if Node B detected and did channel estimating this moment, then Node B and UE can be simultaneously with the timer zero clearings; If UE does not send up sounding, but Node B has but detected sounding from other upward signal, then the UE timer continues timing, the zero clearing of Node B timer, and Node B sends HS-SCCH, UE sends up sounding after receiving HS-SCCH, and NodeB also detects this sounding, then Node B can learn that by this sounding detecting sounding last time makes mistakes, this moment, Node B and UE can be simultaneously with the timer zero clearings, and Node B does channel estimating according to current detected sounding, subsequent process and step s204～step s207 is similar.
Embodiment 3, the embodiment of the invention a kind of in the TDD system, obtain uplink complete channel matrix method flow process as shown in Figure 3, comprise 2 antennas in the hypothesis subscriber equipment in the present embodiment, UE does not have timer, Node B comprises a timer.With reference to Fig. 3, present embodiment may further comprise the steps:
Step s301 is according to the definite period T of upgrading channel matrix H of channel scene.
Step s302, when Node B need adopt the antenna technology (as the multiplexing emission of descending double fluid, antenna mode switching etc.) that depends on complete channel matrix, Node B checked timer, judges whether timer is overtime.If not, then change step s303, otherwise change step s304.Downlink data in the present embodiment is to use double-current MIMO emission.
Step s303, to the HS-SCCH of UE transmission normal format, scheduling UE, UE receives this HS-SCCH, owing to be the HS-SCCH of normal format, UE is subsequently according to the data on the preparation of the sequential relationship in the standard reception downlink traffic channel HS-PDSCH.
Step s304, send the downlink physical control channel information of a special format to UE, such as HS-SCCH (being not limited to the HS-SCCH channel) information, the downlink physical control channel information of special format be to use with existing standard in different form trigger UE and send up sounding.Such as for HS-SCCH, the code channel starting symbol of regulation code channel indication signaling can not be ended number greater than code channel in the existing standard, therefore can design to make the code channel starting symbol end number greater than code channel in special format; Perhaps the TBS signaling is set to complete 0 bit; Perhaps also can use other special format.
After step s305, UE receive the special format control channel information, use 2 sky alignment Node B to send up sounding in 2 Burst respectively, sending the employed physical resource of sounding can be indicated by this control channel information.
Step s306, Node B does uplink channel estimation according to the sounding of UE, upgrades H.Node B is the timer zero clearing after upgrading H.
Step s307, Node B sends HS-SCCH to UE, scheduling UE, UE receives HS-PDSCH according to schedule information.
In addition, for step s304 and s305, also can send the downlink physical control channel information of a normal format to UE, such as E-AGCH (being not limited to E-AGCH) information, after UE receives the control channel information of this normal format, sending to Node B is up sounding, such as E-PUCH (being not limited to E-PUCH) information.
Embodiment 4, and in existing standard, HS-SCCH and HS-PDSCH have fixed timing relationship, and its sequential relationship as shown in Figure 4.With reference to Fig. 4, HS-SCCH and HS-PDSCH will send to UE by Node B in former and later two TTI, and promptly HS-SCCH sends at Sub-Frame#n, and HS-PDSCH sends at Sub-Frame#n+1.
Comprise 2 antennas in the hypothesis subscriber equipment in the present embodiment, the embodiment of the invention is not used timer, but utilize timing relationship to carry out the renewal of up H, be specially Node B when having descending double-current data to send, between Sub-Frame #n and Sub-Frame #n+1, increase N TTI (N is a positive integer), as shown in Figure 5.Two Burst cause UE of configuration send up sounding signal to Node B in these newly-increased TTI then, do channel estimating for Node B and upgrade H.The configuration of these 2 Burst can pre-define, and is perhaps notified by high-level signaling.
The embodiment of the invention sends the method for up sounding signal respectively in different time sections by a plurality of antennas of subscriber equipment, obtain uplink complete channel matrix, make the TDD system under the up prerequisite of can not many antennas launching simultaneously of subscriber equipment, can support realization, guaranteed many antenna performances of TDD system based on technology such as the precoding of complete channel matrix and antenna switchings.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (17)
1, a kind of method of obtaining uplink complete channel matrix in the TDD system is characterized in that, said method comprising the steps of:
Subscriber equipment uses a plurality of antennas to send up sounding signal in different time sections respectively;
Channel estimating is done according to described sounding signal in the base station;
The base station obtains the uplink complete channel matrix H of described subscriber equipment according to described channel estimating.
2, in the TDD system, obtain the method for uplink complete channel matrix according to claim 1, it is characterized in that, use respectively before a plurality of antennas send the step of up sounding signal in different time sections at described subscriber equipment, also comprise: the period T of determining to upgrade channel matrix H according to the channel scene.
3, as in the TDD system, obtaining the method for uplink complete channel matrix as described in the claim 2, it is characterized in that, use a plurality of antennas to send in the step of up sounding signal respectively, specifically comprise in different time sections at described subscriber equipment:
When the timer timing of described subscriber equipment reaches period T, and in period T not when the base station sends up sounding signal, described subscriber equipment uses a plurality of days alignment base stations to send up sounding signal in a plurality of Burst respectively.
4, in the TDD system, obtain the method for uplink complete channel matrix according to claim 1, it is characterized in that, use a plurality of antennas to send in the step of up sounding signal respectively, specifically comprise in different time sections at described subscriber equipment:
When described subscriber equipment adopts DPCH, according to making an appointment or cycle of the transmission uplink special physical channel information of high-level signaling configuration, described subscriber equipment uses a plurality of antennas periodically to send up sounding signal in different time sections respectively.
5, in the TDD system, obtain the method for uplink complete channel matrix according to claim 1, it is characterized in that, use a plurality of antennas to send in the step of up sounding signal respectively, specifically comprise in different time sections at described subscriber equipment:
Increase a plurality of Transmission Time Intervals between High-Speed Shared Control Channel and High-Speed Physical Downlink Shared Channel, described subscriber equipment uses a plurality of antennas to send up sounding signal respectively in described a plurality of Transmission Time Intervals.
6, in the TDD system, obtain the method for uplink complete channel matrix according to claim 1, it is characterized in that, use respectively before a plurality of antennas send the step of up sounding signal in different time sections, also comprise at described subscriber equipment:
Need adopt the antenna technology that depends on complete channel matrix when described base station, the timer timing of described base station reaches period T, and when not upgrading channel matrix H in period T, described base station utilizes downlink physical control channel information to notify described subscriber equipment to send up sounding.
7, as in the TDD system, obtaining the method for uplink complete channel matrix as described in the claim 6, it is characterized in that described base station utilizes downlink physical control channel information to notify described subscriber equipment to send the step of up sounding, specifically comprises:
When described subscriber equipment was provided with timer, described base station used the downlink physical control channel information of normal format to notify described subscriber equipment to send up sounding.
8, as in the TDD system, obtaining the method for uplink complete channel matrix as described in the claim 6, it is characterized in that described base station utilizes downlink physical control channel information to notify described subscriber equipment to send the step of up sounding, specifically comprises:
When described subscriber equipment was not provided with timer, described base station used the downlink physical control channel information of normal format or the downlink physical control channel information of special format to notify described subscriber equipment to send up sounding;
When using the downlink physical control channel information of normal format, described subscriber equipment sends uplink physical channel information as sounding according to the schedule information on the downlink physical control channel of described normal format on corresponding physical resource, keep supplying capable channel estimating;
When using the downlink physical control channel information of special format, described subscriber equipment learns it is to notify it to send up sounding according to the particularity of described downlink physical control channel information.
9, in the TDD system, obtain the method for uplink complete channel matrix as claim 1 to 8 as described in each, it is characterized in that the concrete form of described up sounding is: include only pilot tone or uplink physical channel information.
10, a kind of subscriber equipment is characterized in that, described subscriber equipment comprises:
A plurality of antennas are used for communicating with the base station;
Up sounding signal transmitting unit is used to use the described a plurality of days described base stations of alignment to send up sounding signal;
The signal sending controling unit is used to control described up sounding signal transmitting unit and sends up sounding signal in different time sections.
11, subscriber equipment as claimed in claim 10 is characterized in that, described signal sending controling unit comprises:
Timer;
Cycle is determined subelement, is used for determining according to the channel scene period T of renewal channel matrix H;
Control sub unit is used for determining the period T that subelement is determined according to the timing and the described cycle of described timer, controls described up sounding signal transmitting unit and sends up sounding signal.
12, subscriber equipment as claimed in claim 10 is characterized in that, described signal sending controling unit comprises:
The cycle storing sub-units is used to store and makes an appointment or cycle of the transmission uplink special physical channel information of high-level signaling configuration;
Control sub unit is used for the cycle according to described cycle storing sub-units storage, controls described up sounding signal period property transmitting element and sends up sounding signal.
13, subscriber equipment as claimed in claim 10 is characterized in that, described signal sending controling unit comprises:
Transmission Time Interval is provided with subelement, is used for increasing between High-Speed Shared Control Channel and High-Speed Physical Downlink Shared Channel a plurality of Transmission Time Intervals;
Control sub unit is used for according to described Transmission Time Interval a plurality of Transmission Time Intervals that subelement increases being set, and controls described up sounding signal transmitting unit and send up sounding signal in described a plurality of Transmission Time Intervals.
14, subscriber equipment as claimed in claim 10 is characterized in that, described signal sending controling unit comprises:
Announcement information receives subelement, is used to receive the described subscriber equipment of notifying that the base station sends and sends the announcement information of up sounding;
Control sub unit is used for according to described announcement information, controls described up sounding signal transmitting unit and sends up sounding signal.
15, a kind of base station is characterized in that, described base station comprises:
Channel estimating unit is used for doing channel estimating according to the sounding signal that subscriber equipment sends;
The channel matrix acquiring unit is used for obtaining according to described channel estimating the uplink complete channel matrix H of described subscriber equipment.
16, base station as claimed in claim 15 is characterized in that, described base station also comprises:
Timer;
The cycle determining unit is used for according to the definite period T of upgrading channel matrix H of channel scene;
The announcement information transmitting element is used for determining the period T that subelement is determined according to the timing and the described cycle of described timer, sends to subscriber equipment and notifies described subscriber equipment to send the announcement information of up sounding.
17, base station as claimed in claim 16 is characterized in that, described announcement information transmitting element comprises:
The information format control sub unit is used for the configuration according to subscriber equipment, controls the form of described announcement information; When described subscriber equipment was provided with timer, the form of described announcement information was the downlink physical control channel information of normal format; When described subscriber equipment was not provided with timer, the form of described announcement information was the downlink physical control channel information of special format or the downlink physical control channel information that contains the normal format of schedule information.
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| WO2017071283A1 (en) * | 2015-10-28 | 2017-05-04 | 中兴通讯股份有限公司 | Two-flow power water-filling method and device, and base station |
| WO2017118079A1 (en) * | 2016-01-05 | 2017-07-13 | 中兴通讯股份有限公司 | Method and device for dual-stream beamforming, and base station |
| CN106961401A (en) * | 2016-01-11 | 2017-07-18 | 华为技术有限公司 | A kind of channel estimation methods and device |
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- 2008-09-11 CN CN200810119936A patent/CN101674122A/en active Pending
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| CN104363190B (en) * | 2010-05-03 | 2018-06-08 | 高通股份有限公司 | The method and apparatus of antenna in communicating for detection wireless |
| WO2017071283A1 (en) * | 2015-10-28 | 2017-05-04 | 中兴通讯股份有限公司 | Two-flow power water-filling method and device, and base station |
| WO2017118079A1 (en) * | 2016-01-05 | 2017-07-13 | 中兴通讯股份有限公司 | Method and device for dual-stream beamforming, and base station |
| CN106953669A (en) * | 2016-01-05 | 2017-07-14 | 中兴通讯股份有限公司 | A kind of method of dual-stream beamforming, device and base station |
| CN106953669B (en) * | 2016-01-05 | 2020-01-21 | 中兴通讯股份有限公司 | Method, device and base station for double-current beam forming |
| CN106961401A (en) * | 2016-01-11 | 2017-07-18 | 华为技术有限公司 | A kind of channel estimation methods and device |
| CN106961401B (en) * | 2016-01-11 | 2020-08-25 | 华为技术有限公司 | Channel estimation method and device |
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| CN106412998B (en) * | 2016-11-16 | 2019-07-12 | 清华大学 | A kind of the load concocting method and system of intelligent communications terminal platform |
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