CN108282782A

CN108282782A - A kind of uplink exempts from authorized user's activating detection method, device and base station

Info

Publication number: CN108282782A
Application number: CN201710009715.7A
Authority: CN
Inventors: 王三新
Original assignee: Shenzhen Jinli Communication Equipment Co Ltd
Current assignee: Shenzhen Jinli Communication Equipment Co Ltd
Priority date: 2017-01-06
Filing date: 2017-01-06
Publication date: 2018-07-13
Also published as: WO2018126787A1

Abstract

The embodiment of the invention discloses a kind of uplinks to exempt from authorized user's activating detection method, including：It determines the user equipment being multiplexed in each resource group, and a pilot frequency sequence is distributed for each user equipment, and there is low cross correlation between different pilot frequency sequences；Pilot data is received in the extension frequency pilot sign of any subframe；According at least one user equipment of pilot data and compressed sensing algorithm determination transmission pilot data in the pilot frequency sequence of all user equipmenies of resource group multiplexing, extension frequency pilot sign.The activation test problems for exempting to authorize are abstracted as compressed sensing problem by the embodiment of the present invention, and determine by compressed sensing algorithm to send at least one user equipment of the pilot data in base station side, it provides the foundation for subsequent processes (such as channel estimation), to provide guarantee to exempt from mandate performance.The embodiment of the present invention also discloses a kind of uplink and exempts from authorized user's activation detection apparatus and base station.

Description

A kind of uplink exempts from authorized user's activating detection method, device and base station

Technical field

The present invention relates to mobile communication technology fields more particularly to a kind of uplink to exempt from authorized user's activating detection method, dress It sets and base station.

Background technology

Wireless communication system is widely deployed to provide such as phone, video, data, messaging and broadcast etc Various telecommunications service.Typical wireless communication system may be used can by shared available system resource (for example, bandwidth, Transmission power) support the multiple access technology with the communication of multiple users.The example of this multiple access technology includes CDMA (CDMA) system, time division multiple acess (TDMA) system, frequency division multiple access (FDMA) system, orthogonal frequency division multiple access (OFDMA) system, single load Wave frequency division multiple access (SC-FDMA) system and TD SDMA (TD-SCDMA) system.

These multiple access technologies have been adopted in various telecommunication standards, enable different wireless devices in city to provide City, country, area, the common protocol communicated in even global level.A kind of example of emerging telecommunication standard is long-term Evolution (LTE/LTE-A).LTE/LTE-A is the Universal Mobile Communication System issued by third generation partner program (3GPP) (UMTS) the enhancing set of mobile standard.LTE/LTE-A is designed to by improving spectrum efficiency, reduction expense, improving service, profit Preferably support mobile broadband linking Internet with new frequency spectrum, and with OFDMA is used on downlink (DL), in uplink It is carried out more preferably using SC-FDMA and using other open standards of multiple-input and multiple-output (MIMO) antenna technology on link (UL) It integrates on ground.But as the demand to mobile broadband accesses continues to increase, exist to the further improved need in LTE technologies It asks.Currently, set about starting having studied to the 5th generation communication technology (5th-Generation, 5G) in world wide.

5G is a kind of communication of multi-technical fusion, and extensive data, connection industry are met by the change and innovation of technology The demand of business.In RAN71 meeting, 3GPP has set up the SI (study item) for research of newly eating dishes without rice or wine about 5G.According to 5G pairs In the division of vertical scene, 3GPP mainly carries out the research of new technology of eating dishes without rice or wine in terms of three：The mobile broadband service of enhancing (Enhanced Mobile BroadBand, EMBB), highly reliable low time delay business (Ultra-reliable Low-latency Communications, URLLC) and a large amount of machine type communication (Massive Machine Type Communications, MMTC).The targeted type of service of these three scenes is different, and demand is also different.Wherein, for EMBB business, two A main index is high bandwidth and low time delay may support the big bandwidth of 100MHz, and very on following high-frequency communication Sometime whole bandwidth it all may be distributed directly to a user.And uplink scheduling time delay and hybrid automatic repeat-request (Hybrid Automatic Repeat reQuest, HARQ) feedback delay also brings along time delay influence.For mMTC business, It needs battery life very long it is desirable that narrowband service, and this business just needs the frequency domain of smaller particle size and wider granularity Time-domain resource.For URLLC business, delay requirement is 0.5ms, it is also desirable to domain scheduling granularity when reducing, and reduce uplink Scheduling delay and hybrid automatic repeat-request (Hybrid Automatic Repeat reQuest, HARQ) feedback delay are brought Time delay influence.

Further, for above-mentioned several application scenarios, 3GPP in channel coding, multiple access access, newly eat dishes without rice or wine to design Research is expanded with several aspects such as multiple antennas.Under URLLC and mMTC scenes, due to business and traditional broadband data service There are many differences, it is therefore desirable to targetedly study the technology for being suitble to above-mentioned scene.Wherein, in order to ensure the business of uplink Real-time and linking number, novel multiple access and exempt from authorize (Grant Free, GF) mechanism be Current standards research one it is important Direction.

A few days ago, in 1#87 meeting of RAN, some have been formd substantially for the licensing scheme of exempting under URLLC scenes Conclusion.All concentrate on how carrying out the distribution and multiplexing of resource for exempting from the research emphasis of licensing scheme at present.However, above-mentioned side Method lacks perfect user and activates testing mechanism, i.e., the user device set of each transmission data how is determined in base station side.This One defect has become an important factor for influence exempts to authorize performance.

Invention content

The embodiment of the present invention provides a kind of uplink and exempts from authorized user's activating detection method, device and base station, with to exempt to authorize Performance provides safeguard.

In a first aspect, an embodiment of the present invention provides a kind of uplinks to exempt from authorized user's activating detection method, including：

It determines the user equipment being multiplexed in each resource group, and a pilot frequency sequence is distributed for each user equipment, and There is low cross correlation between the different pilot frequency sequences；

Pilot data is received in the extension frequency pilot sign of any subframe；

According to the pilot tone in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign Data and compressed sensing algorithm determine at least one user equipment for sending the pilot data.

The pilot frequency sequence for all user equipmenies in some possible embodiments, being multiplexed according to the resource group, Pilot data and compressed sensing algorithm in the extension frequency pilot sign, which determine, sends at least one described of the pilot data The step of user equipment is specially：

According to the pilot tone in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign Data and compressed sensing algorithm determine the coarse channel estimated result at least one user equipment for sending the pilot data.

In some possible embodiments, determine that the user equipment being multiplexed in each resource group specifically includes：

The user equipment of multiplexing is determined according to the resource block number in each resource group.

In some possible embodiments, pilot data is received in the extension frequency pilot sign of any subframe to specifically include：

The extension frequency pilot sign for receiving the pilot data is determined according to the users multiplexing equipment in each resource group Frequency domain position；

The pilot data is received in the frequency domain position.

In some possible embodiments, the method further includes：

The user data for sending at least one user equipment of the pilot data and sending is received in the subframe, In, the running time-frequency resource other than the frequency domain position for receiving the pilot data receives the user data.

In some possible embodiments, at least one user equipment for sending the pilot data is being determined Afterwards, the method further includes：

Channel estimation and data balancing are carried out to determining at least one user equipment.

In some possible embodiments, the method further includes：

The pilot data of other user equipmenies is received in the conventional pilot symbol of the subframe；

Letter is carried out to the user equipment for sending the pilot data according to the pilot data in the conventional pilot symbol Estimate in road.

The pilot frequency sequence for all user equipmenies in some possible embodiments, being multiplexed according to the resource group, Pilot data and compressed sensing algorithm in the extension frequency pilot sign, which determine, sends at least one described of the pilot data User equipment specifically includes：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂ … x_N]^T+N₀It determines and sends at least the one of the pilot data A user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁S₂…S_N] it is that the resource group is multiplexed All user equipmenies the pilot frequency sequence set, [x₁ x₂…x_N] it is the user equipment collection for sending the pilot frequency sequence It closes.

The pilot frequency sequence for all user equipmenies in some possible embodiments, being multiplexed according to the resource group, Pilot data and compressed sensing algorithm in the extension frequency pilot sign, which determine, sends at least one described of the pilot data The coarse channel estimated result of user equipment specifically includes：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂…x_N]^T+N₀It determines and sends at least one of the pilot data The coarse channel estimated result of the user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁ S₂ … S_N] be the resource group multiplexing all user equipmenies the pilot frequency sequence set, [x₁ x₂…x_N] it is to send the pilot tone The user device set of sequence.

Second aspect, an embodiment of the present invention provides a kind of uplinks to exempt from authorized user's activation detection apparatus, including：

Determination unit for determining the user equipment being multiplexed in each resource group, and is each user equipment distribution One pilot frequency sequence, and there is low cross correlation between the different pilot frequency sequences；

Receiving unit receives pilot data for the extension frequency pilot sign in any subframe；

The determination unit is additionally operable to the pilot frequency sequence for all user equipmenies being multiplexed according to the resource group, the expansion Pilot data and compressed sensing algorithm in exhibition frequency pilot sign determine that at least one user for sending the pilot data sets It is standby.

In some possible embodiments, the determination unit is additionally operable to：

In some possible embodiments, the determination unit is specifically used for：

The receiving unit is used to receive the pilot data in the frequency domain position.

In some possible embodiments, the receiving unit is additionally operable to：

In some possible embodiments, described device further includes：

Processing unit, for carrying out channel estimation and data balancing to determining at least one user equipment.

In some possible embodiments, the receiving unit is additionally operable to receive in the conventional pilot symbol of the subframe The pilot data of other user equipmenies；

Described device further includes：

Processing unit, for according to the pilot data in the conventional pilot symbol to sending the use of the pilot data Family equipment carries out channel estimation.

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂…x_N]^T+N₀It determines and sends at least one of the pilot data The user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁S₂…S_N] it is resource group multiplexing The set of the pilot frequency sequence of all user equipmenies, [x₁ x₂…x_N] it is the user device set for sending the pilot frequency sequence.

The third aspect, the embodiment of the present invention additionally provide a kind of base station, including：Processor, memory, communication interface and total Line；The processor, the memory are connected by the bus with the communication interface and complete mutual communication；It is described Memory stores executable program code；The processor by read the executable program code stored in the memory come Operation program corresponding with the executable program code exempts from authorized user's activating detection method for a kind of uplink of execution； Wherein, the method is as described above.

The uplink that the embodiment of the present invention is provided is exempted from authorized user's activating detection method and device, and the activation authorized will be exempted from Test problems are abstracted as compressed sensing problem, and determine by compressed sensing algorithm in base station side to send the pilot data At least one user equipment provides the foundation for subsequent processes (such as channel estimation), to be carried to exempt from mandate performance It has supplied to ensure.

Description of the drawings

Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.

Fig. 1 is the schematic flow diagram that the uplink that first embodiment of the invention provides exempts from that authorized user detects Activiation method；

Fig. 2 is the schematic flow diagram that the uplink that second embodiment of the invention provides exempts from that authorized user detects Activiation method；

Fig. 3 is the schematic diagram of the frame structure involved by first embodiment of the invention；

Fig. 4 is that the pilot data of three user equipmenies sends schematic diagram；

Fig. 5 is the schematic flow diagram that the uplink that third embodiment of the invention provides exempts from that authorized user detects Activiation method；

Fig. 6 is the schematic diagram of the frame structure involved by third embodiment of the invention；

Fig. 7 is that the pilot data of four user equipmenies sends schematic diagram；

Fig. 8 is that the uplink that first embodiment of the invention provides exempts from authorized user's activation detection apparatus structural schematic diagram；

Fig. 9 is that the uplink that second embodiment of the invention provides exempts from authorized user's activation detection apparatus structural schematic diagram；

Figure 10 is the structural schematic diagram for the base station that first embodiment of the invention provides.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes.

It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded Body, step, operation, element, component and/or its presence or addition gathered.

It is also understood that the term used in this description of the invention is merely for the sake of the mesh for describing specific embodiment And be not intended to limit the present invention.As description of the invention and it is used in the attached claims, unless on Other situations are hereafter clearly indicated, otherwise " one " of singulative, "one" and "the" are intended to include plural form.

It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is Refer to any combinations and all possible combinations of one or more of associated item listed, and includes these combinations.

As used in this specification and in the appended claims, term " if " can be according to context quilt Be construed to " when ... " or " once " or " in response to determination " or " in response to detecting ".Similarly, phrase " if it is determined that " or " if detecting [described condition or event] " can be interpreted to mean according to context " once it is determined that " or " in response to true It is fixed " or " once detecting [described condition or event] " or " in response to detecting [described condition or event] ".

In techniques described herein, user equipment (for example, cellular phone or smart phone) can utilize channel radio Letter system emits and receives data for duplex communication.The user equipment can pass through downlink and uplink and base Station is communicated.Downlink (or forward link) refers to the communication link from base station to terminal, and uplink (or reverse strand Road) refer to communication link from terminal to base station.

Further, user equipment may include the transmitter emitted for data and for the reception of data receiver Machine.Transmitter may include radio-frequency front-end (Radio Front), digital analog converter (English：Digital to Analog Converter, abbreviation DAC), baseband processor (Baseband processor) and beam forming unit (Beamforming Unit).The baseband processor of transmitter for realizing to transmitted or received signal processing, including layer mapping, precoding, Modulating/demodulating, coding/compiling etc. further can also believe physical control channel, physical data channel, physical broadcast Road, reference signal etc. are handled.Transmitter radio-frequency front-end generally includes power distributing network (Divider), phase shifter and day Linear array, to realize beam forming function.Beam forming unit then controls radio-frequency front-end according to baseband processor feedack Phase shift operation is carried out, realizes beam forming.Receiver side also includes radio-frequency front-end, analog-digital converter, baseband processor and wave beam Forming unit.Receiver radio frequency front end may also include power synthesis network other than including aerial array and phase shifter.Receiver Reception signal is down-converted to the analog signal of base band by radio-frequency front-end from the signal of some carrier frequency, and base-band analog signal passes through Analog-to-digital conversion can extract transmitting data at digital signal, baseband processor by the operations such as channel estimation and demodulation.It receives The beam forming unit of machine is consistent with transmitter beam forming unit function, can be used in by controlling phase shifter phase shift value tune Whole beam position.

Optionally, which can be mobile station (English：Mobile Station, abbreviation MS), can also be base station Platform (English：Base Station, abbreviation BS)；Correspondingly, which can be BS, can also be MS.Implement in the present invention In example, which can be the base station in GSM or CDMA, such as base transceiver station (English：Base Transceiver Station, Abbreviation BTS), it can also be the base station in WCDMA, such as NodeB, can also be the evolved base station in LTE, such as eNB or e- Base station in NodeB (evolutional Node B) or future network, the embodiment of the present invention do not limit.

The user equipment can be supported and different radio access technologies (Radio Access Technology, RAT) The communication (such as LTE/LTE-A and NR) of multiple wireless systems.Wherein, LTE/LTE-A refers to advanced LTE (LTE-A), and NR refers to Be next-generation 5G networks.Each wireless system may have certain characteristics and requirement, can efficiently support to utilize different RAT Wireless system while communicate.User equipment may include mobile station, terminal, access terminal, subscriber unit, website, etc.. User equipment can also be cellular phone, smart phone, tablet computer, radio modem, personal digital assistant (Personal Digital Assistant, PDA), portable equipment, laptop computer, smartbook, net book, wireless electricity Words, wireless local loop (wireless local loop, WLL) website, bluetooth equipment, etc..User equipment can be with Wireless system is communicated, can be with can be from broadcasting station, one or more Global Navigation Satellite System (Global Navigation Satellite System, GNSS) in satellite etc. receive signal.User equipment can be supported for wireless One or more RAT of communication, such as GSM, WCDMA, CDMA2000, LTE/LTE-A, 802.11, etc..Term " radio Access technology ", " RAT ", " radiotechnics ", " air interface " and " standard " are often interchangeably used.It needs to illustrate It is that in LTE/LTE-A systems, single-carrier frequency division multiple access (Single-carrier is respectively adopted in uplink/downlink carrier wave Frequency-Division Multiple Access, SC-FDMA)/OFDM and cyclic prefix (Cyclic Prefix, CP)。

It should be noted that the embodiment of the present invention mainly discussed is that uplink exempts from authorized user testing mechanism is activated to ask Topic, i.e., how base station side determines the user device set of each transmission data, is primarily adapted for use in 5G involved highly reliable Low time delay business (Ultra-reliable Low-latency Communications, URLLC) and a large amount of machine type communication (Massive Machine Type Communications, MMTC) two kinds of application scenarios.The cardinal principle of the embodiment of the present invention It is：It proposes that a kind of uplink based on compressed sensing exempts from authorized user's activating detection method, is in base station side and user equipment side first Orthogonal pilot frequency sequence is distributed for user equipment in each resource group, then in base station side, utilizes the frequency domain of pilot frequency locations Data and compressed sensing algorithm, obtain the user device set of transmission data, and estimate the channel of multi-user installation simultaneously, and lead The length of frequency can flexibly match according to the number of users that resource group is multiplexed.It should be noted that can according to compressive sensing theory Know, the cross correlation between pilot frequency sequence can meet zero defect recovery when being less than 0.1.Therefore, the embodiment of the present invention is following In discussion, the cross correlation between mentioned pilot frequency sequence is below 0.1.

Referring to FIG. 1, being the signal that first embodiment of the invention provides that a kind of uplink exempts from authorized user's activating detection method Flow chart.As shown, this method may include：

S101 determines the user equipment being multiplexed in each resource group, and is each user equipment one pilot frequency sequence of distribution, and Cross correlation between different pilot frequency sequences is relatively low.

Specifically, in each resource group include multiple resource blocks (Resource Blocks, RB), answered in each resource group It is related with the number of resource block in each resource group with the total number of user equipment.Wherein, resource block is believed to physics Mapping of the road to resource particle (Resource Element, RE), including physical resource module (PhysicalResource Blocks, PRB) and virtual resource blocks (VirtualResource Blocks, VRB).For example, if being wrapped in each resource group 3 resource blocks are included, the maximum number for the user equipment being multiplexed in the resource group is 100.At this point, can be in maximum number 100 Within arbitrarily set total number of the numerical value as the user equipment being multiplexed in the resource group, for example, setting in the resource group The total number of the user equipment of multiplexing is 50.Further, base station side and user equipment side can also be each use in resource group Family equipment distributes an independent pilot frequency sequence S_i{ 1≤i≤N }, and the cross correlation between different pilot frequency sequences is relatively low.Example Such as, the pilot frequency sequence for being the distribution of user equipment 1,2,3 is S respectively₁、S₂、S₃, and pilot frequency sequence S₁、S₂、S₃Cross correlation be less than 0.1。

S102 receives the pilot data that at least one user equipment is sent in the extension frequency pilot sign of any subframe.

Specifically, on any one sub-frame of uplink, multiple user equipmenies can send ascending pilot frequency by exempting from licensing scheme Sequence.Wherein, briefly, exempt from licensing scheme and refer to that user equipment does not need base station side and carries out any mandate to it, directly Upstream data is sent to base station, which includes pilot data, a variety of reference signals and other user data.Base station side Multiple user equipmenies can be received in any subframe and are used in resource group exempts from transmitted by authorization method, respective pilot number According to, reference signal and other user data.For example, the total number of users multiplexing equipment is 50 in each resource group, hair It is { 1,7,10 } to send the user device set of data, i.e., currently has user equipment 1, user equipment 7 and user equipment 10 to base station Transmission includes the upstream data of pilot data.At this point, base station pilot data received on subframe k is user equipment 1, uses The blended data of family equipment 7, user equipment 10 can be indicated with following formula：

Y=S₁+S₇+S₁₀+N₀

Wherein, Y indicates the pilot data that base station receives, S₁、S₇、S₁₀Respectively user equipment 1, user equipment 7 and use The pilot frequency sequence of family equipment 10, N₀For white Gaussian noise.

S103, according in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign Pilot data and compressed sensing algorithm determine at least one user equipment for sending the pilot data.

Specifically, the formula in step S102 can be abstracted as following compressed sensing problem：

Y=[S₁ S₂ … S_N]·[x₁ x₂ … x_N]^T+N₀

Wherein, [S₁S₂…S_N] be the resource group multiplexing all user equipmenies the pilot frequency sequence set, [x₁x₂… x_N] it is the user device set for sending the pilot frequency sequence.x_i(1≤i≤N) indicates whether user i sends pilot data, if Transmission data, x_i=1, otherwise x_i=0.In upper example, x₁=1, x₇=1, x₁₀=1.In addition, the T in above-mentioned formula indicates to turn It sets, i.e., the mutual transposition between row vector and column vector.

Due in [x₁ x₂…x_N] in, only oligo-element is 1, i.e., under URLLC and mMTC scenes, only a small amount of user Equipment can send upstream data in same subframe, therefore [x₁ x₂…x_N] meeting sparse characteristic, user at this time activates detection to ask Topic can be abstracted as following compressed sensing problem：

Y=SX+N₀

Wherein, S=[S₁S₂…S_N], X=[x₁x₂…x_N]^T

Therefore, a small amount of pilot tone frequency domain data and compressed sensing recovery algorithms can be utilized in base station side (i.e. receiving terminal), To be restored multiple user device sets of transmission data to get to the multiple user equipmenies for sending the pilot data User device set determines the user equipment for sending the pilot data.

That is, in formula Y=[S₁ S₂ …S_N]·[x₁ x₂…x_N]^T+N₀In, Y, [S₁S₂…S_N] and N₀All it is Know, therefore, the user device set [x of transmission data can be obtained₁ x₂…x_N]。

The uplink of the embodiment of the present invention exempts from authorized user's activating detection method, first true according to the resource block in each resource group The total number of users multiplexing equipment in fixed each resource group, and set simultaneously for each user in base station side and user equipment side Back-up matches a pilot frequency sequence, and the cross correlation between the different pilot frequency sequences is relatively low, later, in any one sub-frame of uplink On, at least one user equipment is connect by exempting from licensing scheme transmission data, base station on the extension frequency pilot sign in any subframe Pilot data is received, finally according in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign Pilot data and compressed sensing algorithm determine that at least one user equipment for sending the pilot data, i.e. determination set out Send the user device set of the pilot data.The embodiment of the present invention will be exempted from the user equipment authorized activation test problems and is abstracted as Compressed sensing problem, and defined by compressed sensing algorithm in base station side and send at least one described of the pilot data User equipment provides the foundation for subsequent processes (such as channel estimation), to provide guarantee to exempt from mandate performance.This Outside, compared to user's activating detection method based on orthogonal pilot frequency sequence in traditional technology, the side that the embodiment of the present invention is provided Method can effectively support more users equipment to carry out upstream data transmission.

Referring to FIG. 2, being the signal that second embodiment of the invention provides that a kind of uplink exempts from authorized user's activating detection method Flow chart.It eats dishes without rice or wine to design it should be noted that frame structure involved in the present embodiment is new in a kind of 5G technologies, i.e. the frame Structure is to be totally different from the frame structure of LTE, specifically includes frame structure configuration and basic scheduling unit etc..As shown, This method may comprise steps of：

S201 determines users multiplexing equipment in each resource group, and is each user equipment one pilot frequency sequence of distribution, and not Cross correlation between same pilot frequency sequence is relatively low.

Specifically, in each resource group include multiple resource blocks (Resource Blocks, RB), answered in each resource group It is related with the number of resource block in each resource group with the total number of user equipment.Wherein, resource block is believed to physics Mapping of the road to resource particle (Resource Element, RE), including physical resource module (Physical Resource Blocks, PRB) and virtual resource blocks (Virtual Resource Blocks, VRB).For example, if in each resource group Including 3 resource blocks, the maximum number of users multiplexing equipment is 100 in the resource group.At this point, can be in maximum number 100 Within arbitrarily set total number of the numerical value as the user equipment being multiplexed in the resource group, for example, setting in the resource group The total number of users multiplexing equipment is 50.Further, base station side and user equipment side can also be each user in resource group Equipment distributes an independent pilot frequency sequence S_i{ 1≤i≤N }, and the cross correlation between different pilot frequency sequences is relatively low.Example Such as, the pilot frequency sequence for being the distribution of user equipment 1,2,3 is S respectively₁、S₂、S₃, and pilot frequency sequence S₁、S₂、S₃Cross correlation be less than 0.1。

S202 receives the pilot data that at least one user equipment is sent on the extension frequency pilot sign of any subframe, User data is received on running time-frequency resource other than the frequency domain position of the extension frequency pilot sign.

It should be noted that the upstream data that at least one user equipment is sent to base station includes pilot data, Duo Zhongcan Examine signal such as demodulated reference signal, Demodulation Reference Signal, DMRS) and other user data.

Specifically, frame structure as shown in Figure 3 is used in the present embodiment.As shown, the length of the subframe is 1ms, packet Include two time slots (slot), the length of each time slot is 0.5ms, and configuration structure having the same in each time slot, per for the moment Gap includes seven symbols.For example, the first time slot (slot1) includes symbol 0, symbol 1, symbol 2, symbol 3, symbol 4, symbol 5 And symbol 6.The symbol 3 that each time slot can be defined is extension frequency pilot sign, for carrying pilot data.In the burst, may be used With using at least one time slot as basic scheduling unit.Specifically, first according to the users multiplexing equipment in each resource group The frequency domain position for determining the extension frequency pilot sign for receiving the pilot data, receives the pilot number in the frequency domain position later According to, and the running time-frequency resource other than the frequency domain position for receiving the pilot data receives the user data.For example, work as base When the total number for the users multiplexing equipment configured by each resource group of standing is 50, it may be determined that in subframe, receive pilot data The frequency domain position of extension frequency pilot sign be 36 RE in symbol 3, and the pilot data is received on the frequency domain position.Such as Shown in Fig. 4, base station receives pilot data Y totally on 36 RE of symbol 3 (extending frequency pilot sign), and in other running time-frequency resources The user data and other reference signals etc. are received on (including symbol 0, symbol 1, symbol 2, symbol 4, symbol 5 and symbol 6).

Further, as previously mentioned, in the present embodiment, user equipment 1, user equipment 7 and user equipment 10 are to base station Transmission data, at this point, base station pilot data received on subframe k is user equipment 1, user equipment 7, user equipment 10 Blended data, can be indicated with following formula：

Y=S₁+S₇+S₁₀+N₀

Wherein, Y indicates the pilot data that base station is received in symbol 3, S₁、S₇、S₁₀Respectively user equipment 1, Yong Hushe For 7 and the pilot frequency sequence of user equipment 10, N₀For white Gaussian noise.

S203, according in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign Pilot data and compressed sensing algorithm, determine at least one user equipment for sending the pilot data.

Specifically, the formula in step S202 can be abstracted as following compressed sensing problem：

Y=[S₁ S₂ … S_N]·[x₁ x₂ … x_N]^T+N₀

Wherein, [S₁S₂…S_N] be the resource group multiplexing all user equipmenies the pilot frequency sequence set, [x₁ x₂…x_N] it is the user device set for sending the pilot frequency sequence.x_i(1≤i≤N) indicates whether user i sends pilot data, If transmission data, x_i=1, otherwise x_i=0.In upper example, x₁=1, x₇=1, x₁₀=1..In addition, the T tables in above-mentioned formula Show transposition, i.e., the mutual transposition between row vector and column vector.

Y=SX+N₀

Wherein, S=[S₁S₂…S_N], X=[x₁x₂…x_N]^T

Therefore, a small amount of pilot tone frequency domain data and compressed sensing recovery algorithms can be utilized in base station side (i.e. receiving terminal), To be restored multiple user device sets of transmission data to get to the multiple user equipmenies for sending the pilot data User device set.

S204 carries out channel estimation and data balancing to determining at least one user equipment.

In a wireless communication system, by channel estimation, receiver can obtain the impulse response of channel, to be follow-up Coherent demodulation provide needed for channel state information (Channel State Information, CSI).

From the angle of channel estimation method prior information, then it can be divided into following three classes：

(1) estimation based on reference signal：Such algorithm determines parameter to be estimated by certain estimation criterion, or presses certain standards The estimated value of parameter to be estimated then gradually is tracked and is adjusted, its main feature is that needing by reference signal, i.e. pilot tone or training sequence Row；Wherein, the estimation based on training sequence and pilot frequency sequence is referred to as the algorithm for estimating based on reference signal；Based on training sequence Channel estimation method be suitable for burst transfer mode system；By training sequence known to transmission, carried out just in receiving terminal The channel estimation of beginning carries out a judgement update when sending useful information data using initial channel estimation results, complete At real-time channel estimation；The system that channel estimation based on frequency pilot sign is suitable for continuously transmitting, by the useful of transmission It is inserted into known frequency pilot sign in data, the channel estimation results of pilot frequency locations can be obtained, followed by the letter of pilot frequency locations Road estimated result obtains the channel estimation results of useful data position by interpolation, completes channel estimation.

(2) blind estimate：Using modulated signal inherently, unrelated with specific carrying information bit some features, or It is the method using the method for decision-feedback to carry out channel estimation；

(3) semi-blind estimation：In conjunction with blind estimate and the channel estimation methods for estimating both methods advantage based on training sequence； In general, it is more normal come the method estimated that frequency pilot sign is periodically inserted by project training sequence or in data With.

The channel estimation based on pilot frequency sequence is mainly used in the embodiment of the present invention.Specifically, when base station side determination is set out Send the user device set [x of data₁ x₂…x_N] after, such as the user device set of transmission data determined be 1, 7,10 }.At this point, first user equipment 7 and user equipment 10 can be shielded, based on aforementioned pilot frequency sequence to user equipment 1 into Row channel estimation.Similarly, channel estimation can be carried out to user equipment 7 and user equipment 10.It is right successively using remaining user of shielding Some user equipment carries out the mode of individual channel estimation, i.e., aforementioned described data balancing.

It should be noted that in other optional modes of the embodiment of the present invention, user equipment 1, user equipment 7 and user Equipment 10 is to base station transmission data, at this point, base station pilot data received on subframe k is user equipment 1, user equipment 7, the blended data of user equipment 10 can be indicated with following formula：

Y=H₁*S₁+H₇*S₇+H₁₀*S₁₀+N₀

Wherein, Y indicates the pilot frequency locations frequency domain data that base station receives, S₁、S₇、S₁₀Respectively user equipment 1, Yong Hushe For 7 and the pilot frequency sequence of user equipment 10, H_iFor the channel of user equipment i, N₀For white Gaussian noise.It should be noted that due to Channel coefficients of the same user equipment on different RE in resource group relatively, therefore to the channel of each user equipment It can be directly with a coefficient H_iIt indicates, corresponding error is embodied in N₀In.

Further, above-mentioned formula can be abstracted as following compressed sensing problem：

Y=[S₁ S₂ …S_N]·[x₁ x₂…x_N]^T+N₀

Wherein, [S₁S₂…S_N] be the resource group multiplexing all user equipmenies the pilot frequency sequence set, [x₁ x₂…x_N] it is the user device set for sending the pilot frequency sequence.x_i(1≤i≤N) indicates whether user i sends pilot data, If transmission data, x_i=H_i, otherwise x_i=0.In upper example, x₁=H₁, x₇=H₇, x₁₀=H₁₀.In addition, the T in above-mentioned formula Indicate transposition, i.e., the mutual transposition between row vector and column vector.

Due in [x₁ x₂…x_N] in, only oligo-element is not 0, i.e., only a small amount of to use under URLLC and mMTC scenes Family equipment can send upstream data in same subframe, therefore [x₁ x₂…x_N] meeting sparse characteristic, user at this time activates detection Problem can be abstracted as following compressed sensing problem：

Y=SX+N₀

Wherein, S=[S₁S₂…S_N], X=[x₁x₂…x_N]^T

Therefore, a small amount of pilot tone frequency domain data and compressed sensing recovery algorithms can be utilized in base station side (i.e. receiving terminal), Obtain sending the coarse channel estimated result [x of multiple user equipmenies of the pilot data₁ x₂…x_N], that is, [H₁H₂…H_N], and Determine therefrom that the user equipment for sending the pilot data.Later, channel estimation sum number can be carried out according to coarse channel estimated result According to equilibrium.Wherein, specific channel estimation and data balancing procedure are as previously mentioned, details are not described herein.

The uplink of the embodiment of the present invention exempts from authorized user's activating detection method, first true according to the resource block in each resource group The total number of users multiplexing equipment in fixed each resource group, and set simultaneously for each user in base station side and user equipment side Back-up matches a pilot frequency sequence, and the cross correlation between the different pilot frequency sequences is relatively low, later, in any one sub-frame of uplink On, user equipment is received by exempting from licensing scheme transmission data, base station on the frequency domain position of the extension frequency pilot sign of the subframe Pilot data, the running time-frequency resource other than the frequency domain position for receiving the pilot data receive the user data, then according to The pilot frequency sequence of all user equipmenies of resource group multiplexing, the pilot data in the extension frequency pilot sign and compressed sensing Algorithm, which determines, sends the user equipment of the pilot data and the coarse channel of the user equipment as a result, last according to User device set and coarse channel estimated result carry out channel estimation and data balancing to each user equipment.The present invention is real It applies example and the activation test problems for exempting to authorize is abstracted as compressed sensing problem, and determined by compressed sensing algorithm in base station side At least one user equipment and coarse channel estimated result of the transmission pilot data is subsequent processes (as believed Estimate in road) it provides the foundation, to provide guarantee to exempt from mandate performance.In addition, being led based on orthogonal compared in traditional technology User's activating detection method of frequency sequence, the method that the embodiment of the present invention is provided can effectively support more users equipment into Row upstream data is sent.

Referring to FIG. 5, being the signal that third embodiment of the invention provides that a kind of uplink exempts from authorized user's activating detection method Flow chart.It should be noted that frame structure involved in the present embodiment is a kind of frame structure to employed in existing LTE It improves.As shown, this method may comprise steps of：

S301 determines users multiplexing equipment in each resource group, and is each user equipment one pilot frequency sequence of distribution, and not Cross correlation between same pilot frequency sequence is relatively low.

Specifically, in each resource group include multiple resource blocks (Resource Blocks, RB), answered in each resource group It is related with the number of resource block in each resource group with the total number of user equipment.Wherein, resource block is believed to physics Mapping of the road to resource particle (Resource Element, RE), including physical resource module (Physical Resource Blocks, PRB) and virtual resource blocks (Virtual Resource Blocks, VRB).For example, if in each resource group Including 3 resource blocks, the maximum number of users multiplexing equipment is 100 in the resource group.At this point, can be in maximum number 100 Within arbitrarily set total number of the numerical value as the user equipment being multiplexed in the resource group, for example, in the present embodiment, if The total number of users multiplexing equipment is 30 in the fixed resource group.Further, base station side and user equipment side can also be resource group Interior each user equipment distributes an independent pilot frequency sequence S_i{ 1≤i≤N }, and it is mutual between different pilot frequency sequences Closing property is relatively low.For example, being S respectively for the pilot frequency sequence that user equipment 1,2,3 distributes₁、S₂、S₃, and pilot frequency sequence S₁、S₂、S₃'s Cross correlation is less than 0.1.

S302 receives pilot data in the extension frequency pilot sign of any subframe, is connect in the conventional pilot symbol of the subframe Receive the pilot data of other user equipmenies.

Specifically, frame structure as shown in FIG. 6 is used in the present embodiment.As shown, the length of the subframe is 1ms, often One subframe is basic scheduling unit, and the subframe includes 14 symbols, is from left to right followed successively by：Symbol 0, symbol 1, symbol Numbers 2, symbol 3, symbol 4, symbol 5, symbol 6, symbol 7, symbol 8, symbol 9, symbol 10, symbol 11, symbol 12 and symbol 13. In traditional LET frame structures, defines symbol 3 and symbol 10 is used as conventional pilot symbol, for receiving pilot data.And this reality It applies in example, on the basis of traditional LTE frame structures, by symbol 1 as extension frequency pilot sign, for receiving pilot data.Specifically Ground is to determine that the extension for receiving the pilot data is led according to the users multiplexing equipment in each resource group in the present embodiment The frequency domain position of frequency symbol.For example, in the present embodiment, users multiplexing equipment that base station is configured by each resource group Total number is 30, therefore in the present embodiment, is come using only wherein 12 RE (part for being filled with oblique line in such as figure) of symbol 1 Receive pilot data.On subframe n, four user equipmenies (user equipment 1, user equipment 7, user equipment 10 and user equipmenies 20) while upstream data is sent.Wherein, user equipment 1, user equipment 7 and user are received on extension frequency pilot sign (i.e. symbol 1) The pilot data of equipment 10, the user equipment 1, user equipment 7 and user equipment 10 are to be suitable for compressed sensing algorithm, can be led to It crosses subsequent compressed sensing recovery algorithms and determines its index, that is, determine the user equipment for sending pilot data.It should be noted that The index refers to index of the user equipment in resource group, such as 1,7,10 rather than its index in entire cell.And The pilot data of user equipment 20 is received on conventional pilot symbol 3 and symbol 10, which is not to be suitable for compression sense Know algorithm.

Further, as previously mentioned, in the present embodiment, user equipment 1, user equipment 7, user equipment 10 and user set Standby 20 to base station transmission data, at this point, base station extends on subframe k receives user equipment 1, user on frequency pilot sign (symbol 1) The pilot data of equipment 7 and user equipment 10 receives the pilot number of user equipment 20 on conventional pilot symbol (symbol 3 and 10) According to.Extend the mixed number that pilot data received on frequency pilot sign is user equipment 1, user equipment 7, user equipment 10 According to can be indicated with following formula：

Y=S₁+S₇+S₁₀+N₀

Wherein, Y indicates the pilot data that base station is received in symbol 1, S₁、S₇、S₁₀Respectively user equipment 1, Yong Hushe For 7 and the pilot frequency sequence of user equipment 10, N₀For white Gaussian noise.

S303, the running time-frequency resource other than the frequency domain position for receiving the pilot data receive the user data.

As shown in fig. 7, base station other running time-frequency resources (including 24 RE of the residue of symbol 1, symbol 0, symbol 2, symbol 4, Symbol 5, symbol 6, symbol 7, symbol 8, symbol 9, symbol 11, symbol 12 and symbol 13) on receive the user data and reference Signal etc..

S304, according in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign Pilot data and compressed sensing algorithm, determine at least one user equipment for sending the pilot data.

Specifically, the formula in step S302 can be abstracted as following compressed sensing problem：

Y=[S₁ S₂ … S_N]·[x₁ x₂…x_N]^T+N₀

Y=SX+N₀

Wherein, S=[S₁S₂…S_N], X=[x₁x₂…x_N]^T

S305 carries out channel estimation and data balancing, according to the routine to determining at least one user equipment Pilot data in frequency pilot sign carries out channel estimation to the user equipment for sending the pilot data.

In the embodiment of the present invention, for user equipment 1, user equipment 7 and user equipment 10, base station is led according to what is received Frequency carries out channel estimation according to Y (vector that length is 12) and compressed sensing algorithm；For user equipment 20, base station then basis The pilot data (vector that length is 36) received and original LTE methods carry out channel estimation.Specifically, for user Equipment 1, user equipment 7 and user equipment 10 can be first by user equipmenies based on aforementioned obtained user device set { 1,7,10 } 7 and user equipment 10 shielded, based on aforementioned pilot frequency sequence to user equipment 1 carry out channel estimation.Similarly, user can be set Channel estimation is carried out for 7 and user equipment 10.Using remaining user is shielded, some user equipment is individually believed successively The mode of road estimation, i.e., aforementioned described data balancing.

It should be noted that in other optional modes of the embodiment of the present invention, base station extends frequency pilot sign on subframe k The pilot data that user equipment 1, user equipment 7 and user equipment 10 are received on (symbol 1), in conventional pilot symbol (3 He of symbol 10) pilot data of user equipment 20 is received on.Pilot data received on frequency pilot sign is extended to be user equipment 1, use The blended data of family equipment 7, user equipment 10 can be indicated with following formula：

Y=H₁*S₁+H₇*S₇+H₁₀*S₁₀+N₀

Wherein, Y indicates the pilot data that base station receives, S₁、S₇、S₁₀Respectively user equipment 1, user equipment 7 and use The pilot frequency sequence of family equipment 10, H_iFor the channel of user equipment i, N₀For white Gaussian noise.

Y=[S₁ S₂ … S_N]·[x₁ x₂…x_N]^T+N₀

Wherein, [S₁S₂…S_N] be the resource group multiplexing all user equipmenies the pilot frequency sequence set, [x₁ x₂…x_N] it is the user device set for sending the pilot frequency sequence.x_i(1≤i≤N) indicates whether user i sends pilot data, If transmission data, x_i=H_i, otherwise x_i=0.In upper example, x₁=H₁, x₇=H₇, x₁₀=H₁₀.In addition, the T in above-mentioned formula Indicate transposition, i.e., the mutual transposition between row vector and column vector.It should be noted that since same user equipment is in different RE On channel coefficients in resource group relatively, therefore can be directly with a coefficient H to the channel of each user equipment_i It indicates, corresponding error is embodied in N₀In.

Y=SX+N₀

Wherein, S=[S₁S₂…S_N], X=[x₁x₂…x_N]^T

Therefore, a small amount of pilot tone frequency domain data and compressed sensing recovery algorithms can be utilized in base station side (i.e. receiving terminal), Multiple user device sets of transmission data are restored, obtain the thick of the multiple user equipmenies for sending the pilot data Channel estimation results [x₁ x₂…x_N], that is, [H₁H₂…H_N].Later, channel estimation sum number can be carried out according to coarse channel estimated result According to equilibrium.Wherein, specific channel estimation and data balancing procedure are as previously mentioned, details are not described herein.

The uplink of the embodiment of the present invention exempts from authorized user's activating detection method, first true according to the resource block in each resource group The total number of users multiplexing equipment in fixed each resource group, and set simultaneously for each user in base station side and user equipment side Back-up matches a pilot frequency sequence, and the cross correlation between the different pilot frequency sequences is relatively low, later, in any one sub-frame of uplink On, user equipment is received by exempting from licensing scheme transmission data, base station on the frequency domain position of the extension frequency pilot sign of the subframe The pilot data of user equipment suitable for compressed sensing algorithm receives on the frequency domain position of the conventional pilot symbol of the subframe The pilot data of other user equipmenies, the pilot frequency sequence, the expansion then according to all user equipmenies of resource group multiplexing The pilot data and compressed sensing algorithm opened up in frequency pilot sign determine the user equipment for sending the pilot data, last root Channel estimation and data balancing are carried out to each user equipment according to the user device set.The embodiment of the present invention will be exempted to award The activation test problems of power are abstracted as compressed sensing problem, and are defined described in transmission by compressed sensing algorithm in base station side At least one user equipment and coarse channel estimated result of pilot data provide for subsequent processes (such as channel estimation) Basis, to provide guarantee to exempt from mandate performance.And the embodiment of the present invention extends on the basis of traditional LTE frame structures Go out an extension frequency pilot sign, while extension frequency pilot sign and conventional pilot symbol are coexisted with suitable for different user equipmenies Data transmission is carried out, can more meet data and send demand.In addition, compared to the user based on orthogonal pilot frequency sequence in traditional technology Activating detection method, the method that the embodiment of the present invention is provided can effectively support more users equipment to carry out upstream data hair It send.

Referring to FIG. 8, being that the uplink that first embodiment of the invention provides exempts from the schematic diagram of authorized user's activation detection apparatus. As shown, the terminal may include：

Determination unit 10 for determining the user equipment being multiplexed in each resource group, and is each user equipment point With a pilot frequency sequence, and there is low cross correlation between the different pilot frequency sequences；Specifically, which is less than 0.1；

Receiving unit 11 receives pilot data for the extension frequency pilot sign in any subframe；

The determination unit 10 is additionally operable to the pilot frequency sequence for all user equipmenies being multiplexed according to the resource group, the expansion Pilot data and compressed sensing algorithm in exhibition frequency pilot sign determine that at least one user for sending the pilot data sets It is standby.

Specifically, the determination unit 11 is specifically used for：

Optionally, the determination unit 11 is additionally operable to：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂…x_N]^T+N₀It determines and sends at least one of the pilot data The coarse channel estimated result of the user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁S₂…S_N] For the set of the pilot frequency sequence of all user equipmenies of resource group multiplexing, [x₁ x₂…x_N] it is to send the pilot frequency sequence User device set.

The uplink of the embodiment of the present invention exempts from authorized user's activation detection apparatus, first passes through determination unit 11 according to each resource Resource block in group determines the total number of users multiplexing equipment in each resource group, and is simultaneously in base station side and user equipment side Each user distributes a pilot frequency sequence, and the cross correlation between the different pilot frequency sequences is relatively low, later, any one On a sub-frame of uplink, at least one user equipment is led by exempting from licensing scheme transmission data, extension of the base station in any subframe Pilot data, all users being multiplexed according to resource group finally by determination unit 10 are received by receiving unit 11 on frequency symbol The pilot frequency sequence of equipment, the pilot data in the extension frequency pilot sign and compressed sensing algorithm determine and send the pilot tone At least one user equipment of data, that is, determine the user device set for sending the pilot data.The present invention is implemented Example will exempt from the user equipment authorized activation test problems and be abstracted as compressed sensing problem, and pass through compressed sensing algorithm in base station side At least one user equipment for sending the pilot data is defined, is provided for subsequent processes (such as channel estimation) Basis, to provide guarantee to exempt from mandate performance.In addition, compared to the user based on orthogonal pilot frequency sequence in traditional technology Activating detection method, the method that the embodiment of the present invention is provided can effectively support more users equipment to carry out upstream data hair It send.

Referring to FIG. 9, being that the uplink that second embodiment of the invention provides exempts from the schematic diagram that authorized user activates detection terminal. As shown, the terminal may include：Determination unit 20, receiving unit 21 and processing unit 22.

Wherein, frame structure involved in the present embodiment is that new in a kind of 5G technologies eats dishes without rice or wine to design, i.e., the frame structure is It is totally different from the frame structure of LTE, specifically includes frame structure configuration and basic scheduling unit etc..The frame structure includes two The length of time slot (slot), each time slot is 0.5ms, and configuration structure having the same in each time slot, each time slot wrap Include seven symbols.For example, the first time slot (slot1) includes symbol 0, symbol 1, symbol 2, symbol 3, symbol 4, symbol 5 and symbol 6.The symbol 3 that each time slot can be defined is extension frequency pilot sign, for carrying pilot data.It in the burst, can be down to A few time slot is as basic scheduling unit.

Specifically, the determination unit 20 is specifically used for：

The receiving unit 21 is used to receive the pilot data in the frequency domain position.

Further, the receiving unit 21 is additionally operable to：

Specifically, processing unit 22 is used to carry out channel estimation to determining at least one user equipment and data are equal Weighing apparatus.

It should be noted that remaining function and first embodiment of the determination unit 20, receiving unit 21 in the present embodiment It is similar, therefore details are not described herein.

The uplink of the embodiment of the present invention exempts from authorized user's activation detection apparatus, first passes through determination unit 20 according to each resource Resource block in group determines the total number of users multiplexing equipment in each resource group, and is simultaneously in base station side and user equipment side Each user equipment distributes a pilot frequency sequence, and the cross correlation between the different pilot frequency sequences is relatively low, later, in office It anticipates on a sub-frame of uplink, user equipment is by exempting from licensing scheme transmission data, extension frequency pilot sign of the base station in the subframe Pilot data is received by receiving unit 21 on frequency domain position, the time-frequency money other than the frequency domain position for receiving the pilot data Source receives the user data, the pilot tone sequence for all user equipmenies being then multiplexed according to resource group by determination unit 20 Row, the pilot data in the extension frequency pilot sign and compressed sensing algorithm determine that the user for sending the pilot data sets It is standby, channel estimation and data are carried out to each user equipment according to the user device set finally by processing unit 22 It is balanced.The activation test problems for exempting to authorize are abstracted as compressed sensing problem by the embodiment of the present invention, and pass through compression in base station side Perception algorithm defines at least one user equipment and coarse channel estimated result for sending the pilot data, is follow-up Processing procedure (such as channel estimation) provides the foundation, to provide guarantee to exempt from mandate performance.In addition, compared to traditional technology In user's activating detection method based on orthogonal pilot frequency sequence, the method that the embodiment of the present invention is provided can effectively support more Multi-user installation carries out upstream data transmission.

Optionally, in another embodiment of the invention, involved frame structure is a kind of to employed in existing LTE The improvement of frame structure.Each subframe be basic scheduling unit, the subframe include 14 symbols wherein, symbol 3 and symbol Numbers 10 are used as conventional pilot symbols, for receiving the pilot data transmitted by the user equipment for not being suitable for compressed sensing algorithm, Symbol 1 is as extension frequency pilot sign, for receiving the pilot data transmitted by the user equipment suitable for compressed sensing algorithm.Tool Body, in this embodiment, the receiving unit 21 is additionally operable to receive other use in the conventional pilot symbol of the subframe The pilot data of family equipment；Processing unit 22 is additionally operable to according to the pilot data in the conventional pilot symbol to sending the pilot tone The user equipment of data carries out channel estimation.

The embodiment expands an extension frequency pilot sign on the basis of traditional LTE frame structures, while making extension pilot tone Symbol and conventional pilot symbol coexist to carry out data transmission suitable for different user equipmenies, can more meet data and send need It asks.In addition, compared to user's activating detection method based on orthogonal pilot frequency sequence in traditional technology, the side which is provided Method can effectively support more users equipment to carry out upstream data transmission.

It should be noted that the specific workflow of Fig. 8 and Fig. 9 shown devices is described in detail in preceding method part, Therefore details are not described herein.

Figure 10 is a kind of structural schematic diagram of the base station provided in the embodiment of the present invention, as shown, the base station includes：Extremely A few processor 301, such as CPU, at least one communication interface 303, memory 304, at least one bus 302.Wherein, always Line 302 is for realizing the connection communication between these components.Wherein, communication interface 303 may include display screen (Display), Keyboard (Keyboard), optional communication interface 303 can also include standard wireline interface and wireless interface.Memory 304 can be with Including volatile memory (Volatile Memory), such as random access memory (Random Access Memory, RAM)；Memory can also include nonvolatile memory (Non-Volatile Memory), such as read-only memory (Read- Only Memory, ROM), flash memory (Flash Memory), hard disk (Hard Disk Drive, HDD) or solid state disk (Solid-State Drive, SSD)；Memory 204 can also include the combination of the memory of mentioned kind.Memory 304 can Choosing can also be at least one storage device for being located remotely from aforementioned processor 301.One group of journey is wherein stored in memory 204 Sequence code, and processor 301 calls the program code stored in memory 304, for performing the following operations：

Pilot data is received in the extension frequency pilot sign of any subframe；

Further, processor 301 is additionally operable to execute following operation：

Specifically, processor 301 is for performing the following operations：

The pilot data is received in the frequency domain position.

Further, after determining at least one user equipment for sending the pilot data, processor 301 is also used The operation below executing：

Specifically, according to the pilot frequency sequence, the extension frequency pilot sign of all user equipmenies of resource group multiplexing Interior pilot data and compressed sensing algorithm determine that at least one user equipment for sending the pilot data specifically includes：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂ …x_N]^T+N₀It determines and sends at least one of the pilot data The user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁S₂…S_N] it is resource group multiplexing The set of the pilot frequency sequence of all user equipmenies, [x₁ x₂…x_N] it is the user device set for sending the pilot frequency sequence.

Specifically, according to the pilot frequency sequence, the extension frequency pilot sign of all user equipmenies of resource group multiplexing Interior pilot data and compressed sensing algorithm determine at least one user equipment for sending the pilot data and the use The coarse channel estimated result of family equipment specifically includes：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂…x_N]^T+N₀It determines and sends at least one of the pilot data The coarse channel estimated result of the user equipment and the user equipment, wherein Y is the pilot data received, N₀For white Gaussian Noise, [S₁S₂…S_N] be the resource group multiplexing all user equipmenies the pilot frequency sequence set, [x₁ x₂…x_N] it is hair Send the user device set of the pilot frequency sequence.

In the embodiment of the present invention, the activation test problems for exempting to authorize are abstracted as compressed sensing problem, and logical in base station side Overcompression perception algorithm determines to send at least one user equipment of the pilot data, be subsequent processes (such as Channel estimation) it provides the foundation, to provide guarantee to exempt from mandate performance.

Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This A little functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.Specially Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not It is considered as beyond the scope of this invention.

In addition, in several embodiments provided herein, it should be understood that disclosed method, apparatus and base station, It may be implemented in other ways.For example, the apparatus embodiments described above are merely exemplary, for example, the list Member division, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or Component can be combined or can be integrated into another system, or some features can be ignored or not executed.In addition, shown Or the mutual coupling, direct-coupling or communication connection discussed can be by the indirect of some interfaces, device or unit Coupling or communication connection can also be electricity, mechanical or other form connections.

The unit illustrated as separating component may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple In network element.Some or all of unit therein can be selected according to the actual needs to realize the embodiment of the present invention Purpose.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that each unit physically exists alone, can also be during two or more units are integrated in one unit.It is above-mentioned integrated The form that hardware had both may be used in unit is realized, can also be realized in the form of SFU software functional unit.

The steps in the embodiment of the present invention can be sequentially adjusted, merged and deleted according to actual needs.

Unit in terminal of the embodiment of the present invention can be combined, divided and deleted according to actual needs.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right It is required that protection domain subject to.

Claims

1. a kind of uplink exempts from authorized user's activating detection method, which is characterized in that including：

It determines the user equipment being multiplexed in each resource group, and a pilot frequency sequence is distributed for each user equipment, and is different The pilot frequency sequence between have low cross correlation；

The pilot data that at least one user equipment is sent is received in the extension frequency pilot sign of any subframe；

According to the pilot data in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign And compressed sensing algorithm determines at least one user equipment for sending the pilot data.

2. the method as described in claim 1, which is characterized in that the institute of all user equipmenies according to resource group multiplexing Pilot frequency sequence, the pilot data in the extension frequency pilot sign and compressed sensing algorithm is stated to determine and send the pilot data extremely A few user equipment, including：

According to the pilot data in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign And compressed sensing algorithm determines the coarse channel estimated result at least one user equipment for sending the pilot data；

At least one user equipment for sending the pilot data is determined according to the coarse channel estimated result.

3. method as claimed in claim 1 or 2, which is characterized in that determine the user equipment being multiplexed in each resource group, packet It includes：

4. method as claimed in claim 1 or 2, which is characterized in that receive pilot number in the extension frequency pilot sign of any subframe According to specifically including：

The frequency for the extension frequency pilot sign for receiving the pilot data is determined according to the users multiplexing equipment in each resource group Domain position；

The pilot data is received in the frequency domain position.

5. method as claimed in claim 4, which is characterized in that the method further includes：

The user data for sending at least one user equipment of the pilot data and sending is received in the subframe, wherein Running time-frequency resource other than the frequency domain position for receiving the pilot data receives the user data.

6. method as claimed in claim 5, which is characterized in that determining at least one use for sending the pilot data After the equipment of family, the method further includes：

7. method as claimed in claim 1 or 2, which is characterized in that the method further includes：

Channel is carried out according to the pilot data in the conventional pilot symbol to the user equipment for sending the pilot data to estimate Meter.

8. the method as described in claim 1, which is characterized in that led according to described in all user equipmenies of resource group multiplexing Frequency sequence, the pilot data in the extension frequency pilot sign and compressed sensing algorithm determine and send at least the one of the pilot data A user equipment specifically includes：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂ … x_N]^T+N₀Determine at least one institute for sending the pilot data State user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁ S₂ … S_N] it is resource group multiplexing The set of the pilot frequency sequence of all user equipmenies, [x₁ x₂ … x_N] it is the user equipment collection for sending the pilot frequency sequence It closes.

9. method as claimed in claim 2, which is characterized in that led according to described in all user equipmenies of resource group multiplexing Frequency sequence, the pilot data in the extension frequency pilot sign and compressed sensing algorithm determine and send at least the one of the pilot data The coarse channel estimated result of a user equipment specifically includes：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂ … x_N]^T+N₀Determine at least one institute for sending the pilot data State the coarse channel estimated result of user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁ S₂ … S_N] For the set of the pilot frequency sequence of all user equipmenies of resource group multiplexing, [x₁ x₂ … x_N] it is to send the pilot tone sequence The set of the coarse channel estimated result of the user equipment of row.

10. a kind of uplink exempts from authorized user's activation detection apparatus, which is characterized in that including：

Determination unit is led for determining the user equipment being multiplexed in each resource group, and for each user equipment distribution one Frequency sequence, and there is low cross correlation between the different pilot frequency sequences；

The determination unit is additionally operable to the pilot frequency sequence for all user equipmenies being multiplexed according to the resource group, the extension is led Pilot data and compressed sensing algorithm in frequency symbol determine at least one user equipment for sending the pilot data.

11. device as claimed in claim 10, which is characterized in that the determination unit is additionally operable to：

According to the pilot data in the pilot frequency sequence of all user equipmenies of resource group multiplexing, the extension frequency pilot sign And compressed sensing algorithm determines the coarse channel estimated result at least one user equipment for sending the pilot data.

12. the device as described in claim 10 or 11, which is characterized in that the determination unit is specifically used for：

13. the terminal as described in claim 10 or 11, which is characterized in that the determination unit is specifically used for：

14. device as claimed in claim 13, which is characterized in that the receiving unit is additionally operable to：

15. device as claimed in claim 14, which is characterized in that described device further includes：

16. the device as described in claim 10 or 11, which is characterized in that the receiving unit is additionally operable in the normal of the subframe Rule frequency pilot sign receives the pilot data of other user equipmenies；

Described device further includes：

Processing unit, for being set to the user for sending the pilot data according to the pilot data in the conventional pilot symbol It is standby to carry out channel estimation.

17. device as claimed in claim 10, which is characterized in that the determination unit is specifically used for：

18. device as claimed in claim 11, which is characterized in that the determination unit is specifically used for：

Utilize formula Y=[S₁ S₂ … S_N]·[x₁ x₂ … x_N]^T+N₀Determine at least one institute for sending the pilot data State the coarse channel estimated result of user equipment, wherein Y is the pilot data received, N₀For white Gaussian noise, [S₁ S₂ … S_N] For the set of the pilot frequency sequence of all user equipmenies of resource group multiplexing, [x₁ x₂ … x_N] it is to send the pilot tone sequence The user device set of row.

19. a kind of base station, which is characterized in that including：Processor, memory, communication interface and bus；It is the processor, described Memory is connected by the bus with the communication interface and completes mutual communication；The memory storage can perform journey Sequence code；The processor is run and the executable journey by reading the executable program code stored in the memory The corresponding program of sequence code exempts from authorized user's activating detection method for a kind of uplink of execution；Wherein, the method is as weighed Profit requires 1 to 9 any one of them method.